937924domain: NAppears in sequencesa(1)=1, a(n) = n*7^(n-1) + a(n-1).at n=6A014920a(n) = Sum_{m=0..n} m*n^(m-1).at n=7A068475a(n) = Sum_{m=1..n} m*n^(m+(-1)^n).at n=7A068476a(n) = 1 + 2*n + 3*n^2 + 4*n^3 + 5*n^4 + 6*n^5 + 7*n^6.at n=7A113532a(n) = Sum_{k=1..n} (n^k)' where ' is the arithmetic derivative.at n=6A348375