-1494domain: ZAppears in sequencesa(n) = (-4*n^3 + 27*n^2 - 20*n + 3)/3.at n=13A161711Coefficient array of orthogonal polynomials P(n,x)=(x-n)*P(n-1,x)-(2n-3)*P(n-2,x), P(0,x)=1,P(1,x)=x-1.at n=30A178124Expansion of g.f. A(x) = Product_{n>=1} (1 + x^(n-1) + x^(2*n-1)) * (1 + x^n + x^(2*n-1)) * (1 - x^n - x^(2*n)).at n=36A370541