A011911 [ n(n-1)(n-2)/29 ].

0, 0, 0, 0, 0, 2, 4, 7, 11, 17, 24, 34, 45, 59, 75, 94, 115, 140, 168, 200, 235, 275, 318, 366, 418, 475, 537, 605, 677, 756, 840, 930, 1026, 1128, 1238, 1354, 1477, 1607, 1745, 1890, 2044, 2205, 2375, 2553, 2740

Offset

0,6

Links

Table of n, a(n) for n=0..44.

Index entries for linear recurrences with constant coefficients, signature (3, -3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -3, 3, -1).

Formula

G.f.: (x^5 (2+x (-2+x+x^3-x^4+2 x^5-2 x^6+2 x^7-x^8+x^9-x^10+2 x^11-x^12+x^13-x^14+2 x^15-2 x^16+2 x^17-x^18+x^19+x^21-2 x^22+3 x^23-2 x^24+x^25)))/(1+x (-3+x (3+x (-1+(-1+x)^3 x^26)))). - Peter J. C. Moses, Jun 02 2014

Crossrefs

Sequence in context: A062434 A084267 A177116 * A175822 A078346 A301760

Adjacent sequences: A011908 A011909 A011910 * A011912 A011913 A011914

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved