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A093877
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Number of fixed n-celled polyzebras (or zebra-move-connected polyominoes).
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4
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1, 4, 28, 234, 2162, 21272, 218740, 2323730, 25314097, 281299736, 3176220308, 36332751862
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A polyzebra is a (2,3) leaper. A polyzebra need not be connected in the usual edge-connected sense.
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CROSSREFS
| Cf. A030444 (polyknights).
Sequence in context: A202824 A046904 A030444 * A151830 A112113 A188266
Adjacent sequences: A093874 A093875 A093876 * A093878 A093879 A093880
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KEYWORD
| nonn
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AUTHOR
| Guenter Stertenbrink (Sterten(AT)aol.com), May 21, 2004
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EXTENSIONS
| a(11) from Joseph S. Myers (jsm(AT)polyomino.org.uk), May 21, 2004
a(12) (computed by Gadi Aleksandrowicz's program) by Gill Barequet (barequet(AT)cs.technion.ac.il), Jun 09 2011
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