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A019118 Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EPI = Epistilbite Ca3 [ Al6Si18O48 ] . 16 H2O. 1
0, 0, 6, 6, 4, 24, 45, 74, 210, 475, 1111, 3151, 7825, 19538, 52439, 134817, 343283, 893705, 2323619, 6035255, 15784498, 41487550, 109243888, 288414230, 764235804, 2028942492, 5395231115, 14383370796 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

LINKS

Table of n, a(n) for n=3..30.

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: A209938 A165953 A045885 * A019126 A019206 A104225

Adjacent sequences:  A019115 A019116 A019117 * A019119 A019120 A019121

KEYWORD

nonn,more

AUTHOR

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

EXTENSIONS

a(21)-a(30) from Sean A. Irvine, Apr 05 2019

STATUS

approved

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Last modified October 21 08:47 EDT 2019. Contains 328292 sequences. (Running on oeis4.)