A202520 Denominator of [x^(4n+2)] in the Taylor series log(cosec(x)*sinh(x))= x^2/3 +2*x^6/2835 +2*x^10/467775 +4*x^14/127702575 +...

3, 2835, 467775, 127702575, 350813659321125, 147926426347074375, 144228265688397515625, 84913182070036240111050234375, 206217727884373725983979140625, 45665884751355139750522260795703125, 48463572986198162681964482985158015982421875, 176412350932310924219767245054034888177646484375

Offset

0,1

Comments

Apparently (almost) a bisection of A046989.

Links

Table of n, a(n) for n=0..11.

Crossrefs

Cf. A012858 (numerators).

Sequence in context: A034316 A247838 A003534 * A281928 A036520 A359130

Adjacent sequences: A202517 A202518 A202519 * A202521 A202522 A202523

Keyword

nonn,frac

Author

R. J. Mathar, Dec 20 2011

Status

approved