E.g.f. sin(sinh(sin(x))) (odd powers only).

A009488

E.g.f. sin(sinh(sin(x))) (odd powers only).

Terms

    a(0) =1a(1) =-1a(2) =-7a(3) =223a(4) =-2959a(5) =-82721a(6) =8156073a(7) =-239061825a(8) =-19348243487

External references