id:A146173 - 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 a 110-100-111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 9, 9, 33, 33, 89, 89, 853, 853, 34557, 34557, 906369, 906369, 18920177, 18920177, 1254520087, 1254520087, 193995577775, 193995577775 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.1.0.0.0.0.0.0.1` `.1.0.1.0.0.1.0.1` `.1.1.1.0.0.1.1.1` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.1.1.1.0.0.1.1.1` `.1.0.1.0.0.1.0.1` `.1.0.0.0.0.0.0.1`
	CROSSREFS	`Sequence in context: A146825 A147029 A146258 this_sequence A146190 A147125 A147109` `Adjacent sequences: A146170 A146171 A146172 this_sequence A146174 A146175 A146176`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 27 2008`

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

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