OFFSET
0,4
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
EXAMPLE
1 -1/6*x+1/72*x^2 +53/1296*x^3 -215/31104*x^4 +3341/6531840*x^5 +199159/235146240*x^6 +...
MAPLE
t1:=exp(csc(x)-coth(x));
t2:=series(t1, x, 30);
t3:=seriestolist(t2);
t4:=map(numer, t3); t5:=map(denom, t3); lprint(t2);
MATHEMATICA
Numerator[CoefficientList[Series[Exp[Csc[x]-Coth[x]], {x, 0, 30}], x]](* N. J. A. Sloane, Feb 28 2014 *)
CROSSREFS
KEYWORD
sign,frac
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Corrected by N. J. A. Sloane, Dec 18 2011, based on discussions on the Sequence Fans Mailing List, Dec 13-17 2011.
Mathematica program modified by Harvey P. Dale, Feb 28 2014
STATUS
approved