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A151514 Number of 1-sided strip polyominoes with n cells. 4
1, 1, 2, 5, 10, 24, 53, 126, 289, 686, 1604, 3792, 8925, 21051, 49638, 116858, 275480, 647573, 1525113, 3580673, 8423334, 19755938, 46422915 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

Ed Pegg, Jr., Illustrations of polyforms

Eric Weisstein's World of Mathematics, Polyomino

CROSSREFS

Sequence in context: A032170 A084081 A106376 * A192471 A001431 A054866

Adjacent sequences:  A151511 A151512 A151513 * A151515 A151516 A151517

KEYWORD

nonn

AUTHOR

Ed Pegg, Jr., (ed(AT)mathpuzzle.com), May 13 2009

EXTENSIONS

a(15)-a(23) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 22 2010

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Last modified February 16 07:10 EST 2012. Contains 205874 sequences.