A019199 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MTW = ZSM-12 Nan[ AlnSi28-nO56 ].

0, 1, 2, 6, 8, 32, 50, 100, 258, 770, 1436, 3726, 9142, 23883, 55084, 147062, 363982, 953371, 2406632, 6403549, 16494196, 43839357, 114890164, 307285074, 812459230, 2179005465, 5808849862, 15618264177, 41827412650

Offset

3,3

Links

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

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: A336618 A075999 A096999 * A094678 A076507 A117542

Adjacent sequences: A019196 A019197 A019198 * A019200 A019201 A019202

Keyword

nonn,more

Author

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

Extensions

a(20)-a(31) from Sean A. Irvine, Apr 15 2019

Status

approved