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

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Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.
#6 by Sean A. Irvine at Mon Jun 02 11:59:01 EDT 2025
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#5 by Sean A. Irvine at Mon Jun 02 11:58:59 EDT 2025
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#4 by R. H. Hardin at Mon Jul 13 08:47:00 EDT 2015
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#3 by R. H. Hardin at Mon Jul 13 08:46:56 EDT 2015
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#2 by R. H. Hardin at Mon Jul 13 08:46:39 EDT 2015
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#1 by R. H. Hardin at Mon Jul 13 08:39:41 EDT 2015
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