A019010 Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite EAB = TMA-E (Aiello and Barrer)(1) (Me4N)2Na7[ Al9Si27O7.

2, 4, 24, 156, 1000, 5643, 34982, 233545, 1547406, 10236802, 68328682, 462278064, 3163496690, 21853935721, 152252426550

Offset

2,1

Links

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

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: A330504 A330511 A110491 * A275553 A009672 A018988

Adjacent sequences: A019007 A019008 A019009 * A019011 A019012 A019013

Keyword

nonn,more

Author

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

Extensions

a(11)-a(16) from Sean A. Irvine, Mar 19 2019

Status

approved