OFFSET
0,3
COMMENTS
Essentially a bisection of A013529.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..125
MATHEMATICA
Select[Numerator[CoefficientList[Series[Sin[1/Sin[x] - 1/Sinh[x]], {x, 0, 25}], x]], # != 0 &] (* G. C. Greubel, Nov 11 2016 *)
CROSSREFS
KEYWORD
sign,frac
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Name edited by R. J. Mathar, Dec 20 2011
STATUS
approved