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A151536 Number of 2-sided strip polycairos with n cells. 4
1, 2, 4, 10, 25, 64, 158, 405, 1018, 2580, 6512, 16435, 41411, 104280, 262161, 658763, 1652954, 4145802, 10386103 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Ed Pegg, Jr., Illustrations of polyforms

Eric Weisstein's World of Mathematics, Polycairo

CROSSREFS

Cf. A159866, A151534, A151535.

Sequence in context: A089928 A173610 A036887 * A026269 A000645 A005958

Adjacent sequences:  A151533 A151534 A151535 * A151537 A151538 A151539

KEYWORD

nonn,hard

AUTHOR

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

EXTENSIONS

a(13)-a(19) from Joseph Myers (jsm(AT)polyomino.org.uk), Oct 03 2011

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.