id:A146918 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111-0110 pattern in any orientation.

+0
1

1, 1, 1, 3, 3, 5, 11, 28, 126, 465, 2159, 10384, 61419, 350662, 3134292, 24610534, 338289380, 3522169071, 66083867346, 889383602362, 23393413306195, 406007037878536, 15318525889895482, 348828104686468855 (list; graph; listen)

	OFFSET	`1,4`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.0.0.0` `.0.0.1.1.1.1.0.0` `.0.1.0.1.1.0.1.0` `.1.1.1.0.0.1.1.1` `.1.1.1.0.0.1.1.1` `.0.1.0.1.1.0.1.0` `.0.0.1.1.1.1.0.0` `.0.0.0.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A032020 A084656 A073749 this_sequence A093306 A093309 A126318` `Adjacent sequences: A146915 A146916 A146917 this_sequence A146919 A146920 A146921`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research