T(n, k) = 2^A050605(n) * n! * [x^k] [z^n] (4*exp(x*z))/(exp(z) + 1)^2, triangle read by rows, for 0 <= k <= n.
A326485
T(n, k) = 2^A050605(n) * n! * [x^k] [z^n] (4*exp(x*z))/(exp(z) + 1)^2, triangle read by rows, for 0 <= k <= n.
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =1a(4) =-4a(5) =2a(6) =1a(7) =3a(8) =-6a(9) =2a(10) =-1a(11) =2a(12) =3a(13) =-4a(14) =1a(15) =-1a(16) =-5a(17) =5a(18) =5a(19) =-5a(20) =1a(21) =17a(22) =-24a(23) =-60a(24) =40a(25) =30a(26) =-24a(27) =4a(28) =17a(29) =119
External references
- oeis: A326485