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A018959 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
1, 14, 32, 285, 1214, 8375, 47347, 313140, 2002655, 13551909, 92151432, 641986764, 4517340881, 32200934374, 231513936373 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

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

Database of Zeolite Structures, Structure Commission of the International Zeolite Association, revised 2017.

Georg Thimm, Cycle sequences of crystal structures.

Georg Thimm, Personal website (archived).

Georg Thimm, A graph theoretical approach to the analysis, comparison, and enumeration of crystal structures, Dissertation, Goethe University Frankfurt, Germany, 2008.

Georg Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19(5-6) (1997), 422-424.

CROSSREFS

Sequence in context: A031109 A155819 A120711 * A225420 A107484 A076329

Adjacent sequences:  A018956 A018957 A018958 * A018960 A018961 A018962

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(11)-a(16) from Sean A. Irvine, Mar 07 2019

STATUS

approved

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Last modified January 17 15:20 EST 2022. Contains 350402 sequences. (Running on oeis4.)