A008122 Coordination sequence T2 for Zeolite Code JBW.

1, 4, 12, 24, 36, 56, 86, 118, 146, 176, 228, 286, 330, 376, 438, 518, 588, 650, 732, 818, 906, 998, 1100, 1206, 1292, 1402, 1542, 1668, 1770, 1874, 2036, 2204, 2322, 2442, 2598, 2788, 2948, 3084, 3260, 3440, 3618, 3800, 3996, 4196, 4356, 4556, 4806, 5026

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 + 2*x + 8*x^2 + 10*x^3 + 19*x^4 + 26*x^5 + 30*x^6 + 34*x^7 + 30*x^8 + 26*x^9 + 19*x^10 + 10*x^11 + 8*x^12 + 2*x^13 + x^14) / ((1 - x)^3 * (1 + x^2)^2 * (1 + x + x^2 + x^3 + x^4)^2). - Colin Barker, Dec 20 2015

Crossrefs

Sequence in context: A301171 A033602 A301175 * A008103 A086921 A004778

Adjacent sequences: A008119 A008120 A008121 * A008123 A008124 A008125

Keyword

nonn

Author

Ralf W. Grosse-Kunstleve

Status

approved