

A018981


Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AST = AlPO416 [ Al20P20O80 ] .4 R . 16 H2O.


0



0, 6, 24, 192, 924, 6432, 39096, 251712, 1601904, 10498200, 69861552, 472556352, 3225921672, 22211011704, 154049303808
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

2,2


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(56) (1997), 422424.


CROSSREFS

Sequence in context: A038033 A064049 A336267 * A052594 A320944 A277985
Adjacent sequences: A018978 A018979 A018980 * A018982 A018983 A018984


KEYWORD

nonn,more


AUTHOR

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


EXTENSIONS

a(11)a(16) from Sean A. Irvine, Mar 12 2019


STATUS

approved



