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A003204 Cluster series for honeycomb.
(Formerly M2557)
0
1, 3, 6, 12, 24, 33, 60, 99, 156, 276, 438, 597 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. W. Essam, Percolation and cluster size, in C. Domb and M. S. Green, Phase Transitions and Critical Phenomena, Ac. Press 1972, Vol. 2; see especially pp. 225-226.

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..11.

CROSSREFS

Sequence in context: A319445 A316318 A173216 * A038620 A250300 A330132

Adjacent sequences:  A003201 A003202 A003203 * A003205 A003206 A003207

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 28 08:28 EST 2020. Contains 332323 sequences. (Running on oeis4.)