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A301139
Coordination sequence T1 for Zeolite Code NPO.
1
1, 4, 10, 20, 34, 58, 82, 108, 144, 186, 222, 268, 330, 386, 430, 500, 592, 658, 706, 804, 930, 1002, 1050, 1180, 1344, 1418, 1462, 1628, 1834, 1906, 1942, 2148, 2400, 2466, 2490, 2740, 3042, 3098, 3106, 3404, 3760, 3802, 3790, 4140, 4554, 4578, 4542
OFFSET
0,2
FORMULA
G.f.: (1 + 4*x + 10*x^2 + 20*x^3 + 31*x^4 + 46*x^5 + 52*x^6 + 48*x^7 + 45*x^8 + 24*x^9 + 6*x^10 + 4*x^11 - x^12 - 2*x^13) / (1 - x^4)^3.
CROSSREFS
Sequence in context: A132152 A008234 A008114 * A008116 A301162 A353128
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Mar 18 2018
STATUS
approved