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A003201 Cluster series for square lattice.
(Formerly M4510)
1
1, 8, 32, 108, 348, 1068, 3180, 9216 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

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

M. F. Sykes and J. W. Essam, Critical percolation probabilities by series methods, Phys. Rev., 133 (1964), A310-A315.

LINKS

Table of n, a(n) for n=0..7.

CROSSREFS

Sequence in context: A100312 A204643 * A036393 A196097 A234272 A269077

Adjacent sequences:  A003198 A003199 A003200 * A003202 A003203 A003204

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 10 20:48 EST 2017. Contains 295856 sequences.