# Problems

51 – 100 of 103
 Problem Title Likes Solvers Difficulty

#### Problem 51813. Sum the elements in rows of the Levine triangle

Created by: ChrisR

1

6

#### Problem 48045. Find the Pattern 6

Created by: Doddy Kastanya

0

117

#### Problem 52956. Compute the largest number whose prime factors sum to n

Created by: ChrisR

1

6

Created by: goc3

2

52

Created by: goc3

1

58

Created by: HH

2

14

#### Problem 45335. Take it out

Created by: Asif Newaz

Tags sequence

1

12

#### Problem 52624. Determine whether a number is a fibodiv number

Created by: ChrisR

3

11

#### Problem 55275. List the semiprimes

Created by: ChrisR

0

7

#### Problem 51246. Characterize the final state of another digit inventory sequence

Created by: ChrisR

2

8

#### Problem 47793. Find the smallest prime with n inside

Created by: ChrisR

3

15

Created by: goc3

4

41

#### Problem 45344. lucky

Created by: Asif Newaz

2

12

#### Problem 52881. List the cuban primes

Created by: ChrisR

1

8

#### Problem 49808. Identify eban numbers

Created by: ChrisR

1

11

#### Problem 57288. Sum the unitary divisors of a number

Created by: ChrisR

1

6

#### Problem 51950. Find the smallest integer m such that n divides m!

Created by: ChrisR

2

10

#### Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

Created by: ChrisR

1

6

#### Problem 54345. Fill a rectangle with 1x1 and 2x2 tiles

Created by: ChrisR

Tags tiles, sequence

2

10

#### Problem 45473. Sub-sequence - 01

Created by: Asif Newaz

Tags sequence

1

7

#### Problem 46571. Characterize the final state of the digit inventory sequence

Created by: ChrisR

1

7

#### Problem 46594. Create a sequence of primes p such that p > n π(p)

Created by: ChrisR

1

9

#### Problem 47390. Find Logic 29

Created by: Dev Gupta

Tags logic, cody, logical

2

78

#### Problem 49572. Compute the largest number possible with the Brussels choice

Created by: ChrisR

2

6

#### Problem 45343. How lucky r u ?

Created by: Asif Newaz

2

12

#### Problem 52669. Count the primes in Collatz sequences

Created by: ChrisR

1

11

#### Problem 48040. Find the Pattern 5

Created by: Doddy Kastanya

0

62

Created by: goc3

1

80

#### Problem 51241. Compute home primes in a given base

Created by: ChrisR

0

6

#### Problem 54680. Determine whether a number is practical

Created by: ChrisR

2

5

#### Problem 47518. Play Outside In with primes

Created by: ChrisR

1

7

#### Problem 51715. Iterate the sum of divisors and totient

Created by: ChrisR

3

9

#### Problem 48075. Play PRIMEGAME

Created by: ChrisR

2

8

#### Problem 45423. Bernoulli's Triangle

Created by: Asif Newaz

Tags easy, sequence

2

15

#### Problem 47895. List the dihedral primes

Created by: ChrisR

2

9

#### Problem 47073. Find the nth Fibbinary number

Created by: ChrisR

2

10

#### Problem 52522. Easy Sequences 4: Eliminate the Days of Confusion

Created by: Ramon Villamangca

3

17

#### Problem 55345. Easy Sequences 68: Factorial Rectangles

Created by: Ramon Villamangca

1

4

#### Problem 57293. Compute the unitary totient of a number

Created by: ChrisR

1

1

#### Problem 52183. List the nth prime quartet prefix

Created by: ChrisR

0

6

#### Problem 54775. Flip the parity of digits in a decimal expansion

Created by: ChrisR

1

4

#### Problem 54780. Trap a knight

Created by: ChrisR

1

2

#### Problem 53990. Classify product/digit-sum sequences

Created by: ChrisR

4

7

#### Problem 54355. Compute a determinant

Created by: ChrisR

0

4

#### Problem 54645. Determine whether the input is an anagram number

Created by: ChrisR

0

5

#### Problem 54660. Generate the Figure-Figure sequence

Created by: ChrisR

2

5

#### Problem 2190. Order of things - 2

Created by: J-G van der Toorn

2

10

#### Problem 45321. Kolakoski Sequence

Created by: Asif Newaz

2

6

#### Problem 45474. Sub-sequence - 02

Created by: Asif Newaz

Tags sequence

1

5

#### Problem 45475. Sub-sequence - 03

Created by: Asif Newaz

Tags sequence

2

5

51 – 100 of 103