129570724921
domain: N
Appears in sequences
- Expansion of e.g.f. sin(x)/cos(2*x).at n=6A000464
- Expansion of (sin^2 x + sin x) /cos 2x.at n=13A000822
- Generalized Euler numbers, or Springer numbers.at n=13A001586
- Expansion of e.g.f. exp(x)/cosh(2*x).at n=13A188458
- Shanks's array d_{a,n} (a >= 1, n >= 1) that generalizes the tangent numbers, read by antidiagonals upwards.at n=34A235606