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⇱ The On-Line Encyclopedia of Integer Sequences (OEIS)

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Number of (n+2)X(4+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
#6 by Sean A. Irvine at Wed Jul 23 13:29:14 EDT 2025
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#5 by Sean A. Irvine at Wed Jul 23 13:29:11 EDT 2025
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#4 by R. H. Hardin at Tue Dec 09 11:26:09 EST 2014
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#3 by R. H. Hardin at Tue Dec 09 11:26:06 EST 2014
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#2 by R. H. Hardin at Tue Dec 09 11:25:51 EST 2014
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#1 by R. H. Hardin at Tue Dec 09 11:19:55 EST 2014
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