login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A019453 Coordination sequence T3 for Zeolite Code CGF. 1
1, 4, 9, 18, 34, 55, 76, 97, 131, 177, 217, 251, 290, 349, 419, 478, 533, 596, 673, 756, 839, 925, 1009, 1099, 1199, 1307, 1417, 1520, 1631, 1756, 1882, 2004, 2131, 2273, 2419, 2558, 2698, 2850, 3015, 3180, 3340, 3505, 3675, 3853, 4042, 4232, 4418, 4601 (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, 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.
International Zeolite Association, Database of Zeolite Structures
FORMULA
G.f.: (1 + x) * (1 + 2*x + 5*x^2 + 10*x^3 + 18*x^4 + 26*x^5 + 35*x^6 + 41*x^7 + 54*x^8 + 50*x^9 + 56*x^10 + 41*x^11 + 39*x^12 + 27*x^13 + 19*x^14 + 8*x^15 + 5*x^16 - x^17 + 2*x^18 - 2*x^19 + x^20 + x^22) / ((1 - x)^3 * (1 - x + x^2) * (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 21 2015
CROSSREFS
Sequence in context: A357282 A301157 A019454 * A301104 A038089 A333394
KEYWORD
nonn
AUTHOR
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)