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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 A302507 A204643 * A036393 A318944 A196097

Adjacent sequences:  A003198 A003199 A003200 * A003202 A003203 A003204

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 8 18:37 EST 2019. Contains 329865 sequences. (Running on oeis4.)