2126627016domain: NAppears in sequencesa(n) = Hermite(n, 18).at n=6A158700The 6th Hermite Polynomial evaluated at n: H_6(n) = 64*n^6-480*n^4+720*n^2-120.at n=18A247851a(n) = H(n, 3*n), where H(n,x) is n-th Hermite polynomial.at n=6A349069