177920284domain: NAppears in sequencesa(1)=1, a(n)=n*17^(n-1)+a(n-1).at n=6A014934a(n) = 1 + 2*n + 3*n^2 + 4*n^3 + 5*n^4 + 6*n^5 + 7*n^6.at n=17A113532