-1,2

cosh(x)/sin(x) = -1/x + 2/3*x + 13/90*x^3 + 19/945*x^5 +...

Cf. A097235, A069853. Bisection of A007418.

Sequence in context: A019343 A119570 A018485 this_sequence A122139 A122136 A067208

Adjacent sequences: A097231 A097232 A097233 this_sequence A097235 A097236 A097237

sign,frac

Ralf Stephan, Aug 01 2004