A151515 - OEIS

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A151515

Number of 1-sided strip polyhexes with n cells.

0

1, 1, 2, 6, 15, 44, 121, 353, 1005, 2919, 8398, 24310, 70064, 202225, 582365, 1676889, 4821924, 13857720, 39787804

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..19.

Ed Pegg, Jr., Illustrations of polyforms

Eric Weisstein's World of Mathematics, Polyhex

CROSSREFS

Sequence in context: A373455 A148438 A148439 * A264746 A052870 A293743

Adjacent sequences: A151512 A151513 A151514 * A151516 A151517 A151518

KEYWORD

nonn,hard,more

AUTHOR

Ed Pegg Jr, May 13 2009

EXTENSIONS

a(13)-a(19) from Joseph Myers, Nov 26 2010

STATUS

approved