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A301137
Coordination sequence T1 for Zeolite Code NAB.
1
1, 4, 9, 19, 40, 55, 80, 115, 138, 183, 229, 260, 328, 382, 421, 515, 574, 621, 744, 805, 860, 1015, 1075, 1138, 1328, 1384, 1455, 1683, 1732, 1811, 2080, 2119, 2206, 2519, 2545, 2640, 3000, 3010, 3113, 3523, 3514, 3625, 4088, 4057, 4176, 4695, 4639
OFFSET
0,2
FORMULA
G.f.: (1 + 4*x + 9*x^2 + 16*x^3 + 28*x^4 + 28*x^5 + 26*x^6 + 7*x^7 - x^9 + 2*x^11) / (1 - x^3)^3.
CROSSREFS
Sequence in context: A052549 A153894 A372448 * A214318 A300438 A034479
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Mar 18 2018
STATUS
approved