Create an n-by-n matrix with elements ranging from 1 to n^2 in a rectangular spiral pattern.

Example if n = 5 :

    21    22    23    24    25
    20     7     8     9    10
    19     6     1     2    11
    18     5     4     3    12
    17    16    15    14    13
Solve

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Last Solution submitted on Mar 30, 2026

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Riccardo G. Alexander Ross Hyf Lorenzo

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