id:A147063 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 01010-11111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 2, 3, 6, 9, 16, 23, 74, 177, 647, 1682, 5837, 15849, 74186, 276554, 1634940, 7124985, 45487535, 222097984, 1721224041, 10469414217, 99805923832 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.1.1.0` `.0.0.0.1.0.1.0.1` `.1.0.0.0.0.0.1.1` `.1.1.0.0.0.0.0.1` `.1.0.0.0.0.0.1.1` `.1.1.0.0.0.0.0.1` `.1.0.1.0.1.0.0.0` `.0.1.1.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A051057 A147364 A147227 this_sequence A007865 A052812 A062114` `Adjacent sequences: A147060 A147061 A147062 this_sequence A147064 A147065 A147066`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

AT&T Labs Research