A301025 Coordination sequence T5 for Zeolite Code EZT.

1, 4, 9, 18, 29, 48, 72, 94, 124, 156, 192, 236, 278, 324, 376, 432, 496, 556, 618, 694, 768, 850, 932, 1010, 1106, 1198, 1300, 1404, 1498, 1614, 1726, 1846, 1970, 2082, 2216, 2350, 2490, 2632, 2762, 2914, 3070, 3228, 3388, 3540, 3710, 3884, 4062

Offset

0,2

Links

R. W. Grosse-Kunstleve, Table of n, a(n) for n = 0..1000

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 + 4*x + 29*x^4 + 46*x^5 + 85*x^9 + 9*x^2 + 18*x^3 + 64*x^6 + 75*x^7 + 83*x^8 + 70*x^10 + 49*x^11 + 24*x^12 - 16*x^13 - 47*x^14 - 67*x^15 - 86*x^16 - 92*x^17 - 81*x^18 - 68*x^19 - 51*x^20 - 29*x^21 - 15*x^22 + 2*x^24 - 3*x^29 + 3*x^25 + x^27 - 2*x^30 - 6*x^23) / (1 - x^5)^2 / (1 - x^7) / (1 - x^8).

Crossrefs

Sequence in context: A103976 A301257 A036695 * A147229 A008149 A008025

Adjacent sequences: A301022 A301023 A301024 * A301026 A301027 A301028

Keyword

nonn

Author

Sean A. Irvine, Mar 17 2018

Status

approved