id:A030222 - OEIS Search Results

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Number of n-polyplets (polyominoes connected at edges or corners); may contain holes.

+0
7

1, 2, 5, 22, 94, 524, 3031, 18770, 118133, 758381, 4915652, 32149296, 211637205, 1401194463, 9321454604, 62272330564, 417546684096 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`Computed by Matthew Cook (cook(AT)wolfram.com); extended by David W. Wilson`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	EXAMPLE	`XXX..XX...XX..X.X..X.. (the 5 for n=3)` `.......X...X...X....X.` `.....................X`
	CROSSREFS	`Cf. A006770.` `Sequence in context: A041165 A041006 A083465 this_sequence A056840 A126797 A101206` `Adjacent sequences: A030219 A030220 A030221 this_sequence A030223 A030224 A030225`
	KEYWORD	`nonn,hard,nice`
	AUTHOR	`Matthew Cook (cook(AT)wolfram.com)`
	EXTENSIONS	`More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Sep 26 2002`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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