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A009867
Coordination sequence T2 for Zeolite Code AHT.
1
1, 4, 10, 18, 32, 53, 78, 105, 140, 179, 218, 260, 314, 374, 430, 487, 560, 637, 706, 780, 874, 974, 1062, 1149, 1260, 1375, 1474, 1580, 1714, 1854, 1974, 2091, 2240, 2393, 2522, 2660, 2834, 3014, 3166, 3313, 3500, 3691, 3850, 4020, 4234, 4454, 4638
OFFSET
0,2
REFERENCES
W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996.
FORMULA
G.f.: (1 + 2*x + 4*x^2 + 4*x^3 + 10*x^4 + 11*x^5 + 14*x^6 + 13*x^7 + 20*x^8 + 13*x^9 + 14*x^10 + 12*x^11 + 14*x^12 + 4*x^13 + 2*x^14 + x^15 + 3*x^16 - x^17 - 2*x^18 + x^21) / ((1 - x)^3 * (1 + x) * (1 + x^2)^2 * (1 + x^4)^2). - Colin Barker, Dec 20 2015
CROSSREFS
Sequence in context: A009896 A027372 A008011 * A019455 A073839 A225610
KEYWORD
nonn
STATUS
approved