499360

Appears in sequences

• a(n+3) = 2a(n+2) - 3a(n+1) + 2a(n); a(0) = 1, a(1) = 3, a(2) = 4.at n=42A105579
• a(n) = 1 + prime(n) + prime(n)^2 + prime(n)^3.at n=21A131991
• Totient numbers (A002202) of the form 1 + k + k^2 + k^3 +...+ k^i (i > 1, k > 1).at n=39A282090