id:A146475 - 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 1110-0111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 9, 15, 35, 57, 245, 579, 3057, 8465, 49975, 173815, 1305505, 5674409, 52338659, 276967501, 3125019047, 20455456921, 286529633207, 2318729204115 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.1.1.0` `.1.0.0.1.1.1.0.0` `.1.1.0.0.0.0.0.0` `.1.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.1` `.0.0.0.0.0.0.1.1` `.0.0.1.1.1.0.0.1` `.0.1.1.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A125216 A058505 A133763 this_sequence A100556 A057478 A128687` `Adjacent sequences: A146472 A146473 A146474 this_sequence A146476 A146477 A146478`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research