A068918 Denominators of coefficients in 1/sin(x) - 1/sinh(x) power series.

3, 7560, 1710720, 18681062400, 1277273554292736000, 71944387956080640000, 46533630129992957952000000, 189947572911510017089460502528000000, 161800949418855027866798653440000000

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..112

Mathematica

Select[Denominator[CoefficientList[Series[1/Sin[x] - 1/Sinh[x], {x, 0, 50}], x]], # != 1 &] (* G. C. Greubel, Nov 11 2016 *)

Crossrefs

Cf. A068917.

Sequence in context: A062595 A128147 A326391 * A356645 A362124 A158036

Adjacent sequences: A068915 A068916 A068917 * A068919 A068920 A068921

Keyword

easy,frac,nonn

Author

Benoit Cloitre, Mar 29 2002

Status

approved