A279332 Numerators of coefficients in expansion of (sin(x))/(1 - x - x^2).

0, 1, 1, 11, 17, 187, 901, 61403, 19849, 11566657, 18712297, 1110228313, 5389037609, 1360276717489, 2200966584493, 747861093416219, 1210064076159749, 59172849569407033, 34467722993604601, 476833062569954186123, 771532094165273524673, 524313365828795638534321

Offset

0,4

Links

Clark Kimberling, Table of n, a(n) for n = 0..1000

Example

(0/1) + (1/1)x + (1/1)x^2 + (11/6)x^3 + (17/6)x^4 ... ;  0/1, 1/1, 1/1, 11/6, ... = A279332/A279333.

Mathematica

z = 30; t = CoefficientList[Series[Sin[x]/(1 - x - x^2), {x, 0, z}], x];
Numerator[t]   (* A279332 *)
Denominator[t] (* A279333 *)

Crossrefs

Cf. A279333.

Sequence in context: A056577 A166655 A262552 * A286959 A146446 A228055

Adjacent sequences: A279329 A279330 A279331 * A279333 A279334 A279335

Keyword

nonn,easy,frac

Author

Clark Kimberling, Dec 12 2016

Status

approved