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A030234 Number of n-celled polyplets having bilateral symmetry. +0
1
1, 2, 4, 10, 22, 57, 131, 344, 810, 2144, 5127, 13645, 32984, 88133, 214768, 575578, 1411442 (list; graph; listen)
OFFSET

1,2

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

CROSSREFS

Cf. A030222.

Adjacent sequences: A030231 A030232 A030233 this_sequence A030235 A030236 A030237

Sequence in context: A078040 A164990 A121285 this_sequence A148086 A076875 A018111

KEYWORD

nonn,hard

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

EXTENSIONS

More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Sep 26 2002

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Last modified November 8 07:45 EST 2009. Contains 166143 sequences.


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