A016430 Coordination sequence T1 for Zeolite Code OSI.

1, 4, 10, 21, 37, 57, 82, 111, 145, 189, 236, 280, 332, 392, 454, 525, 599, 671, 754, 841, 927, 1029, 1134, 1230, 1340, 1458, 1572, 1701, 1833, 1957, 2098, 2243, 2381, 2541, 2704, 2852, 3020, 3196, 3362, 3549, 3739, 3915, 4114, 4317, 4507, 4725, 4946

Offset

0,2

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

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+x+4*x^2+4*x^3+7*x^4+6*x^5+7*x^6+4*x^7+6*x^8+3*x^9+x^10-2*x^12) / ((1-x)^3 * (1-x+x^2) * (1+x^2) * (1+x+x^2)^2). - Colin Barker, Dec 19 2015

Crossrefs

Sequence in context: A301014 A301009 A008260 * A008034 A008134 A009897

Adjacent sequences: A016427 A016428 A016429 * A016431 A016432 A016433

Keyword

nonn

Author

Ralf W. Grosse-Kunstleve

Status

approved