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A003200 Cluster series for honeycomb.
(Formerly M4848)
0
1, 12, 66, 312, 1368, 5685 (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..5.

CROSSREFS

Sequence in context: A000972 A180392 A161805 * A036399 A200190 A270251

Adjacent sequences:  A003197 A003198 A003199 * A003201 A003202 A003203

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 20 05:07 EST 2019. Contains 329323 sequences. (Running on oeis4.)