A183810 - OEIS

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A183810

1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor

2187, 79605, 2518389, 89998565, 3023598287, 106324742825, 3645190453457, 127200605449247, 4393367308414597 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 8 of A183811`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions with upper left block zero for 3X9` `..0..0..0..1..1..0..0..0..1....0..0..0..0..1..1..1..1..1` `..0..0..1..1..0..1..1..0..0....0..0..1..1..1..0..0..1..1` `..1..1..1..0..1..1..1..1..0....0..1..1..0..0..1..0..0..0`
	CROSSREFS	`Sequence in context: A209509 A016759 A086874 * A224005 A210057 A232029` `Adjacent sequences: A183807 A183808 A183809 * A183811 A183812 A183813`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 07 2011`
	STATUS	`approved`

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Last modified May 18 21:30 EDT 2022. Contains 353825 sequences. (Running on oeis4.)