A012865 Numerators of coefficients in Taylor series expansion of log(cotan(x)*arcsin(x)).

0, -1, -1, 67, 347, 1417, 590267, 35757697, 1103996977, 23018952061163, 328785573754709, 162948371578537, 3427455470023873621, 69202423313396946997, 6142449451071240707, 174086353362000718582994221, 37938502177281712935274975819, 110449470605872394476263205171, 4389621268440117526955711378765711

Offset

0,4

Links

Table of n, a(n) for n=0..18.

Example

-1/6*x^2-1/60*x^4+67/5670*x^6+347/22680*x^8+1417/103950*x^10+...

Crossrefs

Cf. A202620.

Sequence in context: A142804 A033242 A013533 * A026911 A142371 A142609

Adjacent sequences: A012862 A012863 A012864 * A012866 A012867 A012868

Keyword

sign,frac

Author

Patrick Demichel (patrick.demichel(AT)hp.com)

Extensions

Corrected by N. J. A. Sloane, Dec 21 2011

Status

approved