E.g.f. cos(log(cos(x))), even powers only.

A012003

E.g.f. cos(log(cos(x))), even powers only.

Terms

    a(0) =1a(1) =0a(2) =-3a(3) =-30a(4) =-483a(5) =-12660a(6) =-492063a(7) =-26407290a(8) =-1854592743a(9) =-162954226920

External references