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A007193
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Number of strict n-node animals on cubic lattice.
(Formerly M4249)
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0
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1, 6, 45, 365, 3101, 27144, 242636, 2202873, 20241055, 187766940, 1755409652, 16517284570, 156265005369, 1485269469971, 14174126304850, 135741870538293, 1303996171096108, 12561249340326373, 121298814197201725
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| I. Dutour, Animaux dirig\'{e}s et approximations de s\'{e}ries g\'{e}n\'{e}ratrices, M\'{e}moire de DEA, 1992, Universit\'{e} Bordeaux I.
G. S. Joyce, On the Dhar directed-site animals-enumeration problem for the simple cubic lattice, J Phys A: Math Gen 22 (1989) vol. 19, L919-L924 [Gives 24 terms]
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CROSSREFS
| Sequence in context: A048663 A095003 A004988 * A153399 A007194 A025551
Adjacent sequences: A007190 A007191 A007192 * A007194 A007195 A007196
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KEYWORD
| nonn
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AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 21 2007
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