A018956 - OEIS

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A018956

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFO = AlPO4-41 [ Al20P20O80 ].

0

0, 11, 32, 277, 1286, 8696, 50544, 332333, 2140956, 14448834, 98299732, 683943753, 4812356454, 34301404225, 246708347250

(list; graph; refs; listen; history; text; internal format)

OFFSET

2,2

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: A056123 A006655 A290640 * A018947 A038634 A373047

Adjacent sequences: A018953 A018954 A018955 * A018957 A018958 A018959

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 06 2019

STATUS

approved