Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Examples:
Input n = 3
Output a is [ 2 2 2
2 1 2
2 2 2 ]
Input n = 5
Output a is [ 3 3 3 3 3
3 2 2 2 3
3 2 1 2 3
3 2 2 2 3
3 3 3 3 3 ]

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Last Solution submitted on Feb 05, 2026

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