1396500

Appears in sequences

• a(n) = 5*a(n-1) + 45*a(n-3) - 225*a(n-4), a(0)=0, a(1)=4, a(2)=24, a(3)=60, a(4)=480.at n=9A112611
• Numbers such that the sum of divisors is twice the sum of the exponential divisors.at n=13A274205