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A019266 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for square lattice. 0
1, 0, 4, 12, 56, 280, 1488, 8232, 47008, 274824, 1636520 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.

LINKS

Table of n, a(n) for n=0..10.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A149423 A124004 A243785 * A009114 A144012 A197924

Adjacent sequences:  A019263 A019264 A019265 * A019267 A019268 A019269

KEYWORD

nonn

AUTHOR

Georg Thimm (mgeorg(AT)ntu.edu.sg)

STATUS

approved

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Last modified November 26 01:49 EST 2014. Contains 250017 sequences.