id:A119532 - OEIS Search Results

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A119532

Number of n-ominoes plus number of n-iamonds.

+0
1

2, 2, 2, 3, 8, 16, 47, 132, 435, 1445, 5103, 18259, 66934, 247826, 928137, 3500559, 13290552, 50712016, 194358380, 747624825, 2885120934, 11164896416, 43313276948, 168400053019, 656028153120, 2560227845391, 10007858038797 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Number of polyominoes with n cells plus number of polyiamonds with n cells. Turning over is allowed; holes are allowed.`
	FORMULA	`a(n) = A000105(n) + A000577(n).`
	CROSSREFS	`Cf. A000105, A000577.` `Sequence in context: A134890 A101360 A110910 this_sequence A010583 A051007 A071470` `Adjacent sequences: A119529 A119530 A119531 this_sequence A119533 A119534 A119535`
	KEYWORD	`nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), May 28 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research