Numerators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^(2k+1) in polynomial t_n(x), used to define continuous and n times differentiable sigmoidal transfer functions.

A144815

Numerators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^(2k+1) in polynomial t_n(x), used to define continuous and n times differentiable sigmoidal transfer functions.

Terms

    a(0) =1a(1) =3a(2) =-1a(3) =15a(4) =-5a(5) =3a(6) =35a(7) =-35a(8) =21a(9) =-5a(10) =315a(11) =-105a(12) =189a(13) =-45a(14) =35a(15) =693a(16) =-1155a(17) =693a(18) =-495a(19) =385a(20) =-63a(21) =3003a(22) =-3003a(23) =9009a(24) =-2145a(25) =5005a(26) =-819a(27) =231a(28) =6435a(29) =-15015

External references