Expansion of e.g.f. sec(x*tan(x/2)) (even powers only).
A296939
Expansion of e.g.f. sec(x*tan(x/2)) (even powers only).
Terms
- a(0) =1a(1) =0a(2) =3a(3) =15a(4) =644a(5) =17145a(6) =1124673a(7) =74115496a(8) =7730031915a(9) =921044459943
External references
- oeis: A296939