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A156075 P_n(3) (see A155100). 1
1, 3, 10, 60, 560, 6960, 108160, 2016960, 43880960, 1091055360, 30518978560, 948529167360, 32428291727360, 1209444693749760, 48866368072744960, 2126271870148853760, 99126722911299829760, 4929370112679276380160, 260448010952742716047360, 14570492989330164551516160 (list; graph; refs; listen; history; text; internal format)
OFFSET

-1,2

LINKS

Table of n, a(n) for n=-1..18.

MATHEMATICA

nn = 18; Table[n!, {n, 0, nn}] CoefficientList[Series[1 - Log[Cos[x] - 3*Sin[x]], {x, 0, nn}], x] (* Arkadiusz Wesolowski, Aug 17 2012 *)

CROSSREFS

Sequence in context: A111562 A009654 A013565 * A330624 A034889 A228773

Adjacent sequences:  A156072 A156073 A156074 * A156076 A156077 A156078

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 05 2009

STATUS

approved

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Last modified January 15 23:34 EST 2021. Contains 340195 sequences. (Running on oeis4.)