OFFSET
0,3
COMMENTS
Most (but not all) denominators are in the bisection of A202382.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..194
EXAMPLE
1 - x^2/72 + 217*x^4/31104 - 214279*x^6/235146240 + 824071*x^8/9674588160 - ...
MATHEMATICA
Numerator[Take[CoefficientList[Series[Cos[Csc[x] - Coth[x]], {x, 0, 26}], x], {1, -1, 2}]] (* G. C. Greubel, Nov 13 2016 *)
CROSSREFS
KEYWORD
sign,frac
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Name edited by R. J. Mathar, Dec 21 2011
STATUS
approved