login
A019109
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R [ Si120O240 ]q R.
0
0, 0, 6, 0, 3, 51, 42, 117, 453, 615, 1509, 4665, 9159, 22542, 61659, 143013, 359028, 942234, 2362140, 6096888, 16004478, 41649720, 109662291, 290536845, 769577400, 2049110310, 5470439130, 14619639972, 39172342518
OFFSET
3,3
REFERENCES
G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.
CROSSREFS
Sequence in context: A019108 A019115 A229637 * A089841 A202542 A019766
KEYWORD
nonn,more
AUTHOR
Georg Thimm (mgeorg(AT)ntu.edu.sg)
EXTENSIONS
a(20)-a(31) from Sean A. Irvine, Apr 05 2019
STATUS
approved