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A009891 Coordination sequence T2 for Zeolite Code RTE. 1
1, 4, 10, 22, 37, 54, 79, 108, 140, 176, 215, 262, 312, 365, 423, 484, 552, 623, 698, 777, 860, 950, 1041, 1138, 1240, 1343, 1453, 1568, 1687, 1808, 1933, 2066, 2202, 2341, 2484, 2632, 2786, 2942, 3103, 3269, 3437, 3612, 3791, 3973, 4160, 4350, 4546 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996.

LINKS

R. W. Grosse-Kunstleve, Table of n, a(n) for n = 0..1000

R. W. Grosse-Kunstleve, Coordination Sequences and Encyclopedia of Integer Sequences

R. W. Grosse-Kunstleve, G. O. Brunner and N. J. A. Sloane, Algebraic Description of Coordination Sequences and Exact Topological Densities for Zeolites, Acta Cryst., A52 (1996), pp. 879-889.

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 + x) * (1 + 3*x + 8*x^2 + 17*x^3 + 26*x^4 + 38*x^5 + 48*x^6 + 55*x^7 + 59*x^8 + 55*x^9 + 48*x^10 + 38*x^11 + 26*x^12 + 17*x^13 + 8*x^14 + 3*x^15 + x^16) / ((1 - x)^3*(1 + x^2) * (1 + x + x^2) * (1 + x + x^2 + x^3 + x^4) * (1 + x + x^2 + x^3 + x^4 + x^5 + x^6)). - Colin Barker, Dec 20 2015

CROSSREFS

Sequence in context: A112774 A227225 A008178 * A301077 A341734 A008255

Adjacent sequences:  A009888 A009889 A009890 * A009892 A009893 A009894

KEYWORD

nonn

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified May 6 06:00 EDT 2021. Contains 343580 sequences. (Running on oeis4.)