A147461 - OEIS

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A147461

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0011 pattern in any orientation.

1, 1, 1, 1, 1, 1, 9, 11, 153, 277, 1847, 3941, 42907, 102189, 2677867, 7544909, 418620919, 1424570893, 112979816299, 454603733387, 48372707337627, 228790897270887, 42082899027578731, 234640059600540451 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,7`
	LINKS	`Table of n, a(n) for n=1..24.`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.0.1.1.0.0.1.1.0` `.0.1.1.0.0.1.1.0` `.1.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.1`
	CROSSREFS	`Sequence in context: A019328 A119786 A147429 * A146366 A146603 A159003` `Adjacent sequences: A147458 A147459 A147460 * A147462 A147463 A147464`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin`
	STATUS	`approved`

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Last modified March 30 20:57 EDT 2023. Contains 361623 sequences. (Running on oeis4.)