A156076 P_n(4) (see A155100).

1, 4, 17, 136, 1666, 27200, 555152, 13596736, 388512016, 12687211520, 466101423872, 19026204891136, 854312172054016, 41847505957437440, 2220673304780705792, 126906669626284711936, 7770472824437270972416, 507503647885498965032960, 35217605908746553266470912

Offset

-1,2

Links

Table of n, a(n) for n=-1..17.

Mathematica

nn = 17; Table[n!, {n, 0, nn}] CoefficientList[Series[1 - Log[Cos[x] - 4*Sin[x]], {x, 0, nn}], x] (* Arkadiusz Wesolowski, Aug 17 2012 *)

Crossrefs

Sequence in context: A032325 A032335 A208803 * A041026 A072755 A320444

Adjacent sequences: A156073 A156074 A156075 * A156077 A156078 A156079

Keyword

nonn

Author

N. J. A. Sloane, Nov 05 2009

Status

approved