A068561 Numerators of coefficients in (1+x)^(1/3)-(1-x)^(1/3) power series.

2, 10, 44, 748, 43010, 294814, 6349840, 141329296, 1074518324, 74933514700, 1768430946920, 14084538964600, 340000770605444, 74512476573454612, 609313847842042640, 15044155456074175376, 373539541721841740870

Offset

1,1

Links

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

Mathematica

Numerator/@Select[CoefficientList[Series[(1+x)^(1/3)-(1-x)^(1/3), {x, 0, 40}], x], #!=0&] (* Harvey P. Dale, Jun 30 2011 *)

Crossrefs

Cf. A068562.

Sequence in context: A347524 A065805 A145239 * A068484 A192704 A005963

Adjacent sequences: A068558 A068559 A068560 * A068562 A068563 A068564

Keyword

easy,frac,nonn

Author

Benoit Cloitre, Mar 30 2002

Status

approved