Triangle T(n,k) (1 <= k <= n) of tangent numbers, read by rows: T(n,k) = coefficient of x^n/n! in expansion of (tan x)^k/k!.
A059419
Triangle T(n,k) (1 <= k <= n) of tangent numbers, read by rows: T(n,k) = coefficient of x^n/n! in expansion of (tan x)^k/k!.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =0a(5) =1a(6) =0a(7) =8a(8) =0a(9) =1a(10) =16a(11) =0a(12) =20a(13) =0a(14) =1a(15) =0a(16) =136a(17) =0a(18) =40a(19) =0a(20) =1a(21) =272a(22) =0a(23) =616a(24) =0a(25) =70a(26) =0a(27) =1a(28) =0a(29) =3968
External references
- oeis: A059419