A019259 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VSV = VPI-7 Na26H6[ Zn16Si56O144 ] . 44 H2O.

0, 1, 4, 0, 0, 16, 24, 82, 240, 506, 1200, 2784, 6358, 15838, 40206, 102520, 265314, 682404, 1743868, 4471246, 11502628, 29694976, 77032860, 200484130, 522866760, 1366739182, 3579462164, 9390919826, 24686549192

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: A062685 A192016 A028699 * A019218 A125762 A286216

Adjacent sequences: A019256 A019257 A019258 * A019260 A019261 A019262

Keyword

nonn,more

Author

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

Extensions

a(21)-a(31) from Sean A. Irvine, Apr 20 2019

Status

approved