4110364

Appears in sequences

• a(1) = 1, a(n) = n*9^(n-1) + a(n-1).at n=6A014923
• a(n) = 1 + 2*n + 3*n^2 + 4*n^3 + 5*n^4 + 6*n^5 + 7*n^6.at n=9A113532