id:A146451 - 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 1100-0110-0011 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 1, 11, 23, 43, 147, 439, 1275, 4541, 20063, 98055, 505355, 2950723, 18858815, 128249637, 989759495, 8490117733 (list; graph; listen)

	OFFSET	`1,8`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.1.1.0` `.1.0.0.0.1.1.0.0` `.1.1.0.1.1.0.0.0` `.0.1.1.0.0.1.0.0` `.0.0.1.0.0.1.1.0` `.0.0.0.1.1.0.1.1` `.0.0.1.1.0.0.0.1` `.0.1.1.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A052034 A077041 A068842 this_sequence A029468 A068231 A073024` `Adjacent sequences: A146448 A146449 A146450 this_sequence A146452 A146453 A146454`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research