50455

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 2, 4, 5 and 7.at n=57A136899
• Numbers n such that 4n+1, 4n+3, 4n+7, 4n+9 and 4n+13 are prime.at n=9A254376
• Main diagonal of Unlucky array: a(n) = A255543(n,n).at n=36A255549