id:A146939 - OEIS Search Results

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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1111-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 8, 13, 24, 41, 98, 229, 673, 1711, 5548, 16018, 61606, 212821, 953199, 3714584, 18906725, 85353129, 504635142, 2652064148, 18219772927, 110274034707, 872419840249, 6103743292627, 55838534314788 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.1.1.1.0.0` `.0.0.1.1.1.1.0.0` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1` `.0.0.1.1.1.1.0.0` `.0.0.1.1.1.1.0.0`
	CROSSREFS	`Sequence in context: A084535 A051838 A076792 this_sequence A059028 A066809 A009848` `Adjacent sequences: A146936 A146937 A146938 this_sequence A146940 A146941 A146942`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research