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A019208 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NES = NU-87 H4[ Al4Si64O136 ] . n H2O. 0
0, 1, 5, 4, 7, 28, 56, 89, 277, 719, 1443, 3469, 9359, 21650, 51596, 135156, 337846, 839063, 2173763, 5618513, 14449877, 37718711, 99072109, 260146125, 686218682, 1818312665, 4824702901, 12822871344, 34160124755 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

REFERENCES

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

LINKS

Table of n, a(n) for n=3..31.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A136118 A105665 A019129 * A051553 A203139 A184085

Adjacent sequences:  A019205 A019206 A019207 * A019209 A019210 A019211

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(31) from Sean A. Irvine, Apr 15 2019

STATUS

approved

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Last modified October 16 20:55 EDT 2019. Contains 328103 sequences. (Running on oeis4.)