36581523
domain: N
Appears in sequences
- Expansion of cos(x)/cos(2x).at n=5A000281
- Expansion of cos x (1 + sin x ) /cos 2x.at n=10A000825
- Generalized Euler numbers, or Springer numbers.at n=10A001586
- Shanks's array c_{a,n} (a >= 1, n >= 0) that generalizes Euler and class numbers, read by antidiagonals upwards.at n=26A235605
- Irregular triangle read by rows: coefficients of polynomials xi_n.at n=30A343171