287385
domain: N
Appears in sequences
- Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+47)^2 = y^2.at n=16A118675
- Vinogradov's number J_{3,2}(n).at n=32A281391
- a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} sigma( n/gcd(x_1, x_2, x_3, n) ).at n=20A373130
- a(n) = Sum_{1 <= x_1, x_2 <= n} sigma( ( n/gcd(x_1, x_2, n) )^2 ).at n=20A373132