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A002980 E.g.f: 1/(1-sin(x)+sin(x)^2-sin(x)^3). 0
1, 1, 0, -1, 24, 121, -480, -4201, 48384, 478801, -4968960, -62871601, 885586944, 12996863881, -203910819840, -3476839930201, 63397697224704, 1221998040867361, -24917358603141120, -537278342731116001 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..19.

EXAMPLE

1/(1-sin(x)+sin(x)^2-sin(x)^3) = 1+x-(1/6)*x^3+x^4+(121/120)*x^5-(2/3)*x^6-(4201/5040)*x^7+(6/5)*x^8+(478801/362880)*x^9-(1294/945)*x^10-...

MATHEMATICA

With[{nn=20}, CoefficientList[Series[1/(1-Sin[x]+Sin[x]^2-Sin[x]^3), {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Nov 28 2014 *)

CROSSREFS

Sequence in context: A052605 A195917 A042120 * A244794 A044356 A044737

Adjacent sequences:  A002977 A002978 A002979 * A002981 A002982 A002983

KEYWORD

sign

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Corrected by N. J. A. Sloane, Nov 28 2014 at the suggestion of Harvey P. Dale.

STATUS

approved

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Last modified August 23 00:46 EDT 2017. Contains 290953 sequences.