A187134 - OEIS

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A187134

Number of (n+1)X4 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

405, 19062, 267840, 5755698, 99203418, 1921749372, 34994620836, 658156407930, 12168728064540, 227006548039242, 4215046606416756, 78456814617739176, 1458483057478165140, 27130892560870689198, 504514738674275619150 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 3 of A187140`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..200`
	EXAMPLE	`Some solutions for 6X4` `..0..0..0..0....2..0..0..0....1..0..0..0....1..0..0..0....0..0..0..0` `..2..0..0..0....1..0..0..0....1..0..0..0....1..0..0..0....2..0..0..0` `..2..0..1..0....2..1..0..0....1..0..0..0....2..0..1..0....2..0..1..0` `..0..0..1..0....1..0..0..2....0..0..1..1....2..0..2..2....0..0..1..2` `..2..2..2..2....2..1..1..2....0..0..2..2....1..1..2..1....2..2..2..2` `..0..1..1..1....1..0..1..1....0..0..2..1....0..2..2..1....1..2..2..1`
	CROSSREFS	`Sequence in context: A224527 A219147 A239541 * A185839 A285924 A285860` `Adjacent sequences: A187131 A187132 A187133 * A187135 A187136 A187137`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 05 2011`
	STATUS	`approved`

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Last modified December 9 23:44 EST 2023. Contains 367696 sequences. (Running on oeis4.)