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A008034 Coordination sequence T1 for Zeolite Code APD. 1
1, 4, 10, 21, 37, 57, 82, 112, 145, 184, 228, 275, 328, 385, 446, 512, 583, 658, 738, 823, 911, 1004, 1102, 1203, 1310, 1424, 1539, 1661, 1788, 1914, 2049, 2188, 2329, 2480, 2633, 2789, 2953, 3117, 3287, 3464, 3642, 3828, 4018, 4210, 4409, 4610, 4817, 5030 (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.: (x^27+2*x^26+x^25-2*x^24-9*x^23-20*x^22-34*x^21-53*x^20-75*x^19-98*x^18-121*x^17-142*x^16-159*x^15-172*x^14-178*x^13-177*x^12-170*x^11-157*x^10-139*x^9-117*x^8-94*x^7-71*x^6-51*x^5-34*x^4-20*x^3-10*x^2-4*x-1)/(x^5-x^4+x-1)/(x^7-1)/(x^13+x^12+x^11-x^2-x-1).

CROSSREFS

Sequence in context: A301009 A008260 A016430 * A008134 A009897 A009886

Adjacent sequences:  A008031 A008032 A008033 * A008035 A008036 A008037

KEYWORD

nonn,easy

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified April 12 18:58 EDT 2021. Contains 342932 sequences. (Running on oeis4.)