id:A048664 - OEIS Search Results

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Number of rooted 2-dimensional polyominoes with n square cells, with no symmetries removed.

+0
3

1, 4, 18, 76, 315, 1296, 5320, 21800, 89190, 364460, 1487948, 6070332, 24750570, 100868236, 410919990, 1673486992, 6813529348, 27734769756, 112874034844, 459295593200, 1868653768443, 7601716598916, 30920563717052, 125759730486432, 511445050400275, 2079809585544808, 8457048866652588, 34386482811155244 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`Dan Hoey, Bill Gosper and Rich Schroeppel, Discussions in Math-Fun Mailing list, circa Jul 13 1999.`
	LINKS	`R. C. Schroeppel, A few mathematical experiments`
	CROSSREFS	`Cf. A048663.` `A row of A094166.` `Sequence in context: A037674 A066259 A084213 this_sequence A108012 A017958 A017959` `Adjacent sequences: A048661 A048662 A048663 this_sequence A048665 A048666 A048667`
	KEYWORD	`nonn`
	AUTHOR	`Dan Hoey (Hoey(AT)aic.nrl.navy.mil)`
	EXTENSIONS	`More terms from Rich Schroeppel, May 04 2004`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research