Generate concentric square rings of alternating 1s and 0s to form a layered mandala-style matrix.
e.g. N = 5;
1 1 1 1 1;
1 0 0 0 1;
1 0 1 0 1;
1 0 0 0 1;
1 1 1 1 1
Solve

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Last Solution submitted on Mar 19, 2026

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Pauli Huusari 龙 灰 Lorenzo

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