id:A145859 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in two by two blocks.

+0
1

1, 2, 1, 2, 2, 7, 5, 38, 12, 182, 72, 1536, 513, 21327, 4531, 360939, 68662, 9098657, 1429824, 345351393, 40840428, 18058986880, 1747979822, 1362075540043, 106711196102, 149443289019658, 9237029528023, 23324890541218597 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`Maximal 7 X 7 example` `.0.0.0.0.0.0.0` `.1.1.0.0.0.1.1` `.1.1.0.0.0.1.1` `.0.0.0.0.0.0.0` `.1.1.0.0.0.1.1` `.1.1.0.0.0.1.1` `.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A077014 A093655 A023140 this_sequence A145863 A110775 A092186` `Adjacent sequences: A145856 A145857 A145858 this_sequence A145860 A145861 A145862`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 22 2008`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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