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A007193 Number of strict n-node animals on cubic lattice.
(Formerly M4249)
8
1, 6, 45, 365, 3101, 27144, 242636, 2202873, 20241055, 187766940, 1755409652, 16517284570, 156265005369, 1485269469971, 14174126304850, 135741870538293, 1303996171096108, 12561249340326373, 121298814197201725 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..19.

I. Dutour, Animaux dirigés et approximations de séries génératrices, Mémoire de DEA, 1992, Université Bordeaux I.

Isabelle Dutour, Animaux dirigés et approximations de séries génératrices, Mémoire de DEA, 1992, Université Bordeaux I [Cached copy, no title pages, included with permission. Source for sequences A006193, A007193-A007199]

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]

CROSSREFS

Cf. A006193, A007193, A007194, A007195, A007196, A007197, A007198, A007199.

Sequence in context: A095003 A004988 A257633 * A153399 A007194 A025551

Adjacent sequences:  A007190 A007191 A007192 * A007194 A007195 A007196

KEYWORD

nonn

AUTHOR

Simon Plouffe

EXTENSIONS

More terms from R. J. Mathar, Oct 21 2007

STATUS

approved

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Last modified October 21 14:52 EDT 2019. Contains 328301 sequences. (Running on oeis4.)