25640

Appears in sequences

• a(n) = 16n^2 + n.at n=39A157474
• a(n) = 64*n^2 + 2*n.at n=20A158070
• a(n) = 1600*n^2 + 40.at n=3A158775
• Numbers such that the largest prime factor equals the sum of the 4th power of the other prime factors.at n=16A244344
• Expansion of e.g.f. -LambertW(-2*x / (1 - x))/2.at n=5A376098