Generalized Euler numbers: Square array read by descending antidiagonals, T(n, k) = k!*[x^k] exp(n*x)*sech(x), n>=0, k>=0.

A247498

Generalized Euler numbers: Square array read by descending antidiagonals, T(n, k) = k!*[x^k] exp(n*x)*sech(x), n>=0, k>=0.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =-1a(4) =1a(5) =1a(6) =0a(7) =0a(8) =2a(9) =1a(10) =5a(11) =-2a(12) =3a(13) =3a(14) =1a(15) =0a(16) =0a(17) =2a(18) =8a(19) =4a(20) =1a(21) =-61a(22) =16a(23) =-3a(24) =18a(25) =15a(26) =5a(27) =1a(28) =0a(29) =0

External references