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A030226 Number of n-celled polyhexes (hexagonal polyominoes) without bilateral symmetry. 0
0, 0, 0, 3, 11, 65, 287, 1373, 6370, 30149, 142638, 681520, 3270604, 15789461, 76562081, 372832744, 1822142769, 8934740804, 43938715224, 216650217219 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..20.

CROSSREFS

Sequence in context: A292792 A199135 A096655 * A309174 A233099 A132101

Adjacent sequences:  A030223 A030224 A030225 * A030227 A030228 A030229

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

More terms from Joseph Myers, Sep 21 2002

STATUS

approved

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Last modified May 7 12:38 EDT 2021. Contains 343650 sequences. (Running on oeis4.)