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A057312 Coordination sequence T1 for Zeolite Code SAS. 1
1, 4, 10, 19, 30, 45, 65, 90, 118, 145, 175, 212, 257, 306, 350, 394, 446, 510, 581, 644, 703, 769, 850, 942, 1025, 1101, 1182, 1279, 1390, 1492, 1586, 1684, 1798, 1927, 2046, 2157, 2273, 2406, 2554, 2689, 2815, 2948, 3101, 3270, 3422, 3562, 3710 (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^2) * (1 + x + 2*x^2 + 2*x^3 + 3*x^4 + 4*x^5 + 3*x^6 + 2*x^7 + 2*x^8 + x^9 + x^10) / ((1 - x)^3 * (1 - x + x^2) * (1 + x + x^2 + x^3 + x^4)^2). - Colin Barker, Dec 19 2015

CROSSREFS

Sequence in context: A238705 A022785 A241239 * A219965 A008038 A301248

Adjacent sequences:  A057309 A057310 A057311 * A057313 A057314 A057315

KEYWORD

nonn

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified May 31 07:03 EDT 2020. Contains 334747 sequences. (Running on oeis4.)