id:A146908 - OEIS Search Results

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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0010-1110-0111-0100 pattern in any orientation.

+0
1

1, 1, 1, 3, 1, 3, 5, 21, 49, 187, 409, 2325, 6489, 55121, 197983, 2161765, 11768363, 152495079, 1086067425, 18675930957, 164918184657, 3873609933855 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.1.0.0.0.1.0` `.1.1.1.0.1.1.1.0` `.0.1.1.1.0.1.1.1` `.0.1.0.0.0.1.0.0` `.0.0.1.0.0.0.1.0` `.1.1.1.0.1.1.1.0` `.0.1.1.1.0.1.1.1` `.0.1.0.0.0.1.0.0`
	CROSSREFS	`Sequence in context: A114144 A050820 A133179 this_sequence A049324 A131111 A128549` `Adjacent sequences: A146905 A146906 A146907 this_sequence A146909 A146910 A146911`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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