id:A147196 - OEIS Search Results

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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.

+0
1

1, 1, 1, 3, 5, 13, 27, 85, 297, 1599, 7901, 42229, 268975, 2452217, 25491849, 280714479, 3504622659, 56285411319, 1100845720891, 24390611734773, 611823250262071, 18446369972491401 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.0.0.0.1` `.0.0.1.0.0.1.1.1` `.1.1.1.0.0.1.0.0` `.1.0.0.0.1.1.0.0` `.0.0.0.1.0.0.0.1` `.0.1.1.1.0.1.1.1` `.0.1.0.0.0.1.0.0` `.1.1.0.0.1.1.0.0`
	CROSSREFS	`Sequence in context: A005198 A160823 A077443 this_sequence A110225 A065047 A067932` `Adjacent sequences: A147193 A147194 A147195 this_sequence A147197 A147198 A147199`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research