-19456domain: ZAppears in sequencesExpansion of x*(x^3+2*x^2+3*x-1)/(x+1)^5.at n=19A119515a(n) = (1-2n)*2^n.at n=10A143126Triangle T(n,k): the coefficient [x^(n-k)] of the polynomial 2^n*n!*L(n,3/2,x), where L is the generalized Laguerre Polynomial in the Abramowitz-Stegun normalization.at n=37A229789