Triangle read by rows, expansion of exp(x*z)*z*(tanh(z) + sech(z)), T(n, k) for n >= 1 and 0 <= k <= n-1.

A294033

Triangle read by rows, expansion of exp(x*z)*z*(tanh(z) + sech(z)), T(n, k) for n >= 1 and 0 <= k <= n-1.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =-3a(4) =6a(5) =3a(6) =-8a(7) =-12a(8) =12a(9) =4a(10) =25a(11) =-40a(12) =-30a(13) =20a(14) =5a(15) =96a(16) =150a(17) =-120a(18) =-60a(19) =30a(20) =6a(21) =-427a(22) =672a(23) =525a(24) =-280a(25) =-105a(26) =42a(27) =7a(28) =-2176a(29) =-3416

External references