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

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0101-0111 pattern in any orientation.
#4 by Russ Cox at Sat Mar 31 12:35:15 EDT 2012
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Sat Mar 31
12:35
OEIS Server: https://oeis.org/edit/global/875
#3 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010
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#2 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010
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#1 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009
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