473263

Appears in sequences

• Squarefree n such that the elliptic curve n*y^2 = x^3 - x arising in the "congruent number" problem has rank 3 and nontrivial SHA[2].at n=24A062694
• a(n) = 7*a(n-1) - 4*a(n-2), with a(0) = 0, a(1) = 1.at n=8A190973
• Odd numbers k such that k and k+2 both have at least two divisors with the same value of the Euler totient function (A000010).at n=22A373527