

A008137


Coordination sequence T1 for Zeolite Code LTA and RHO.


0



1, 4, 9, 17, 28, 42, 60, 81, 105, 132, 162, 196, 233, 273, 316, 362, 412, 465, 521, 580, 642, 708, 777, 849, 924, 1002, 1084, 1169, 1257, 1348, 1442, 1540, 1641, 1745, 1852, 1962, 2076, 2193, 2313, 2436, 2562, 2692, 2825, 2961, 3100, 3242, 3388, 3537, 3689
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OFFSET

0,2


REFERENCES

W. M. Meier, D. H. Olson and Ch. Baerlocher, Atlas of Zeolite Structure Types, 4th Ed., Elsevier, 1996


LINKS

Table of n, a(n) for n=0..48.
R. W. GrosseKunstleve, Coordination Sequences and Encyclopedia of Integer Sequences
R. W. GrosseKunstleve, G. O. Brunner and N. J. A. Sloane, Algebraic Description of Coordination Sequences and Exact Topological Densities for Zeolites, Acta Cryst., A52 (1996), pp. 879889.
International Zeolite Association, Database of Zeolite Structures


FORMULA

a(5*m+k) = 40*m^2 + 16*k*m + one of 5 numbers depending on k, 0<=k<5 (N. J. A. Sloane).


MAPLE

(1x^2)*(1x^4)*(1x^6)/((1x)^4*(1x^3)*(1x^5));


CROSSREFS

Sequence in context: A033608 A008577 A033605 * A008023 A008055 A137441
Adjacent sequences: A008134 A008135 A008136 * A008138 A008139 A008140


KEYWORD

nonn,easy


AUTHOR

R. W. GrosseKunstleve (rwgk(AT)cci.lbl.gov)


STATUS

approved



