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A011904 [ n(n-1)(n-2)/22 ]. 0
0, 0, 0, 0, 1, 2, 5, 9, 15, 22, 32, 45, 60, 78, 99, 124, 152, 185, 222, 264, 310, 362, 420, 483, 552, 627, 709, 797, 893, 996, 1107, 1225, 1352, 1488, 1632, 1785, 1947, 2119, 2300, 2492, 2694, 2907, 3130, 3365 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..43.

FORMULA

G.f.: (x^4 (1-x+2 x^2-x^3+x^4-x^5+2 x^6-x^8+x^9))/((-1+x)^4 (1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10)). - Peter J. C. Moses, Jun 02 2014

CROSSREFS

Sequence in context: A152738 A022941 A007982 * A218914 A047809 A014126

Adjacent sequences:  A011901 A011902 A011903 * A011905 A011906 A011907

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 21 12:51 EST 2017. Contains 295001 sequences.