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.: -(2*x^47-2*x^46+5*x^45-x^44+15*x^43+13*x^42+46*x^41+58*x^40+123*x^39+162*x^38+
269*x^37+352*x^36+511*x^35+644*x^34+852*x^33+1031*x^32+1275*x^31+1480*x^30+1730
*x^29+1928*x^28+2150*x^27+2306*x^26+2458*x^25+2542*x^24+2600*x^23+2593*x^22+
2547*x^21+2449*x^20+2309*x^19+2140*x^18+1932*x^17+1721*x^16+1484*x^15+1268*x^14
+1038*x^13+846*x^12+653*x^11+505*x^10+362*x^9+263*x^8+172*x^7+115*x^6+67*x^5+39
*x^4+19*x^3+9*x^2+3*x+1)/(x^23-x^22+3*x^21-3*x^20+5*x^19-5*x^18+7*x^17-7*x^16+9
*x^15-9*x^14+10*x^13-10*x^12+10*x^11-10*x^10+9*x^9-9*x^8+7*x^7-7*x^6+5*x^5-5*x^
4+3*x^3-3*x^2+x-1)/(x^11-1)/(x^5-x^4+x-1)/(x^6+x^5+x^4+x^3+x^2+x+1).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved