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A250121 Crystal ball sequence for planar net 3.3.3.3.6. 1
1, 6, 15, 30, 49, 73, 102, 135, 174, 217, 265, 318, 375, 438, 505, 577, 654, 735, 822, 913, 1009, 1110, 1215, 1326, 1441, 1561, 1686, 1815, 1950, 2089, 2233, 2382, 2535, 2694, 2857, 3025, 3198, 3375, 3558, 3745, 3937, 4134 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..41.

FORMULA

Assuming the generating function for A250120 is correct, this has g.f. (x^2+x+1)*(x^4+3*x^3+3*x+1)/((x^4+x^3+x^2+x+1)*(x-1)^3)

CROSSREFS

Partial sums of A250120.

Sequence in context: A048749 A097889 A256874 * A024802 A011886 A212251

Adjacent sequences:  A250118 A250119 A250120 * A250122 A250123 A250124

KEYWORD

nonn

AUTHOR

Brad Klee and N. J. A. Sloane, Nov 23 2014

STATUS

approved

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Last modified October 20 00:50 EDT 2018. Contains 316378 sequences. (Running on oeis4.)