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A018989 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite ATT = AlPO4-12-TAMU [ Al12P12O48 ] . 4 R. 0
3, 7, 28, 168, 1005, 5596, 33768, 220112, 1441963, 9548019, 64276931, 438234213, 3015411286, 20922996951, 146320241045 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

REFERENCES

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

LINKS

Table of n, a(n) for n=2..16.

G. Thimm, Cycle sequences of crystal structures

CROSSREFS

Sequence in context: A309619 A143948 A252787 * A325258 A073126 A154296

Adjacent sequences:  A018986 A018987 A018988 * A018990 A018991 A018992

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 14 2019

STATUS

approved

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Last modified February 22 08:23 EST 2020. Contains 332118 sequences. (Running on oeis4.)