Irregular triangle read by rows: T(n,k) = [x^k]p_n(x), where (p_n(x)/x^(3n)) * exp(-1/x^2) is the n-th derivative of exp(-1/x^2), n >= 1, 0 <= k <= 2*n-2.

A344031

Irregular triangle read by rows: T(n,k) = [x^k]p_n(x), where (p_n(x)/x^(3n)) * exp(-1/x^2) is the n-th derivative of exp(-1/x^2), n >= 1, 0 <= k <= 2*n-2.

Terms

    a(0) =2a(1) =4a(2) =0a(3) =-6a(4) =8a(5) =-12a(6) =-36a(7) =0a(8) =36a(9) =4a(10) =-96a(11) =-144a(12) =252a(13) =396a(14) =0a(15) =-324a(16) =-88a(17) =-480a(18) =420a(19) =3240a(20) =2520a(21) =-4968a(22) =-5400a(23) =0a(24) =3888a(25) =-656a(26) =-120a(27) =11880a(28) =23760a(29) =-26100

External references