A213378 - OEIS

A213378

Number of polyominoes of order 2n that can be tiled by dominoes in more than one way.

0, 1, 3, 41, 499, 6946, 95964, 1330807, 18395673 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	COMMENTS	`Tilings related by a symmetry of the polyomino that is not a symmetry of the tiling count as distinct (thus, the square tetromino counts as being tiled in two distinct ways).`
	LINKS	`Table of n, a(n) for n=1..9.`
	CROSSREFS	`Cf. A056785, A056786, A213376, A213377.` `Sequence in context: A328509 A087544 A305667 * A189356 A155672 A073844` `Adjacent sequences: A213375 A213376 A213377 * A213379 A213380 A213381`
	KEYWORD	`hard,more,nonn`
	AUTHOR	`Joseph Myers, Jun 10 2012`
	STATUS	`approved`

Last modified October 1 17:46 EDT 2022. Contains 357149 sequences. (Running on oeis4.)