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

1,2

LINKS

Table of n, a(n) for n=1..17.

Eric Weisstein's World of Mathematics, Polyplet.

CROSSREFS

Cf. A030222.

Sequence in context: A121285 A221536 A290277 * A205490 A221839 A205499

Adjacent sequences:  A030231 A030232 A030233 * A030235 A030236 A030237

KEYWORD

nonn,hard

AUTHOR

David W. Wilson

EXTENSIONS

More terms from Joseph Myers, Sep 26 2002

STATUS

approved

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Last modified October 22 06:02 EDT 2018. Contains 316432 sequences. (Running on oeis4.)