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A047965 Coordination sequence T3 for Zeolite Code MSO. 1
1, 4, 12, 21, 32, 51, 80, 110, 132, 164, 212, 263, 304, 343, 406, 480, 542, 598, 668, 759, 844, 919, 1004, 1102, 1206, 1306, 1410, 1521, 1632, 1753, 1882, 2008, 2130, 2262, 2416, 2565, 2698, 2843, 3012, 3184, 3334, 3490, 3678, 3867, 4036, 4207, 4410 (list; graph; refs; listen; history; text; internal format)
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 + 6*x^2 + 15*x^4 + 3*x^5 + 20*x^6 + 6*x^7 + 21*x^8 + 8*x^9 + 14*x^10 + 11*x^11 + 9*x^12 + 14*x^14 - 11*x^15 + 11*x^16 - 6*x^17 + 2*x^18) / ((1 - x)^3 * (1 + x^2)^2 * (1 + x + x^2 + x^3 + x^4) * (1 + x^3 + x^6)). - Colin Barker, Dec 21 2015

CROSSREFS

Sequence in context: A115106 A270795 A191260 * A301071 A038430 A301262

Adjacent sequences:  A047962 A047963 A047964 * A047966 A047967 A047968

KEYWORD

nonn

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified October 18 00:55 EDT 2019. Contains 328135 sequences. (Running on oeis4.)