A018944 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AEL = AlPO4-11 [ Al20P20O80 ].

0, 11, 28, 266, 1120, 7778, 44302, 302172, 1978796, 13772325, 95686208, 678707616, 4834506328, 34756585127, 251200375706

Offset

2,2

Links

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

International Zeolite Association, 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: A364893 A349660 A242941 * A061086 A201633 A347280

Adjacent sequences: A018941 A018942 A018943 * A018945 A018946 A018947

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 01 2019

Status

approved