login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A008122 Coordination sequence T2 for Zeolite Code JBW. 1
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 (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 + 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

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 6 12:33 EDT 2020. Contains 336246 sequences. (Running on oeis4.)