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
a(10*m+k) = 208*m^2 + b(k)*m + c(k), where b(k), c(k) are constants depending on k, 0<=k<10 (N. J. A. Sloane).
G.f.: (1 + x) * (1 + x + 3*x^2 + 3*x^3 + 5*x^4 + 4*x^5 + 6*x^6 + 6*x^7 + 6*x^8 + 4*x^9 + 5*x^10 + 3*x^11 + 3*x^12 + x^13 + x^14) / ((1 - x)^3 * (1 - x + x^2 - x^3 + x^4) * (1 + x + x^2 + x^3 + x^4)^2). - Colin Barker, Dec 19 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved
