A206101 - OEIS

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A206101

Number of (n+1) X (n+1) 0..3 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.

256, 33688, 8114696, 12793359564, 115868265653308, 5228849998045900208, 1142673565861296088168308 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A206109.`
	LINKS	`Table of n, a(n) for n=1..7.`
	EXAMPLE	`Some solutions for n=4:` `..0..2..3..1..2....1..3..1..2..2....1..2..2..3..1....1..3..0..1..0` `..2..2..3..3..3....3..2..0..1..3....1..2..3..3..3....1..3..0..0..0` `..3..2..2..2..0....2..3..2..0..0....1..2..2..2..2....1..3..3..3..3` `..2..2..1..1..1....0..2..0..3..1....1..1..1..2..3....1..1..3..1..1` `..2..1..1..3..2....2..1..3..2..1....0..0..0..2..0....2..1..3..3..1`
	CROSSREFS	`Sequence in context: A205634 A269292 A205362 * A221091 A205458 A206744` `Adjacent sequences: A206098 A206099 A206100 * A206102 A206103 A206104`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Feb 03 2012`
	STATUS	`approved`

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Last modified March 31 17:35 EDT 2023. Contains 361668 sequences. (Running on oeis4.)