OFFSET
0,2
LINKS
R. W. Grosse-Kunstleve, Table of n, a(n) for n = 0..1000
Sean A. Irvine, Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane
International Zeolite Association, Database of Zeolite Structures
FORMULA
G.f.: (1 + 4*x + 30*x^4 + 47*x^5 + 90*x^9 + 9*x^2 + 17*x^3 + 65*x^6 + 79*x^7 + 85*x^8 + 93*x^10 + 78*x^11 + 58*x^12 + 52*x^13 + 37*x^14 + 7*x^15 - 8*x^16 - 11*x^17 - 29*x^18 - 52*x^19 - 64*x^20 - 74*x^21 - 83*x^22 - 93*x^24 - 13*x^29 - 4*x^31 - 79*x^25 - 51*x^27 - 38*x^28 - x^30 - x^32 - 2*x^36 + 4*x^33 - 4*x^35 - 90*x^23 - 59*x^26) / (1 - x^5)^2 / (1 - x^8) / (1 - x^14).
CROSSREFS
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Mar 17 2018
STATUS
approved