you must decide how the input variable is named: 'n', 'nx' or 'x'!! :-/
I cleaned things up a little.
Hard-coded solutions based on look-up tables for F_n or (F_n)², such as Solution 1506329, should be banned and failed by the Test Suite.
I do not undertand the problem. If you provide the fibonacci sequence, there is nothing to do.
Sums with Excluded Digits
Rotate input square matrix 90 degrees CCW without rot90
sum of non-primes
Count decimal digits of a number
Concatenate two strings
Find the dimensions of a matrix
Convert a number to its Roman representation
Find the square of the sum of the digits of a number
Find the area of the four walls
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