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A003208 Cluster series for diamond.
(Formerly M4122)
0
1, 6, 18, 54, 162, 456, 1302, 3630, 10158, 27648, 77022, 206508 (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: A290582 A076941 A006779 * A174313 A002933 A016089

Adjacent sequences:  A003205 A003206 A003207 * A003209 A003210 A003211

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified July 18 19:00 EDT 2019. Contains 325144 sequences. (Running on oeis4.)