-2199

Appears in sequences

• Expansion of e.g.f. cosh(sin(tan(x))), even powers only.at n=4A009143
• Expansion of exp(sin(tan(x))).at n=8A009203
• G.f.: Product_{m>0} 1/(1 - x^m + 2!*x^(2*m)).at n=24A293294