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A008224 Coordination sequence T6 for Zeolite Code PAU. 1
1, 4, 9, 17, 29, 45, 65, 89, 117, 149, 185, 225, 268, 314, 364, 418, 476, 538, 605, 676, 750, 827, 907, 991, 1078, 1169, 1264, 1362, 1464, 1570, 1680, 1794, 1913, 2036, 2161, 2289, 2421, 2557, 2697, 2842, 2992, 3145, 3301, 3460, 3622, 3788, 3958, 4132, 4309 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

For n = 3 to n = 12, a(n) is the sum of two squares separated by 3 (3rd diagonal of A055096). - Avi Friedlich, Apr 01 2015

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

CROSSREFS

Sequence in context: A057314 A057315 A008110 * A036594 A181286 A008138

Adjacent sequences:  A008221 A008222 A008223 * A008225 A008226 A008227

KEYWORD

nonn

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified May 21 08:44 EDT 2022. Contains 353908 sequences. (Running on oeis4.)