390623

Appears in sequences

• Semiprime nearest to 5^n. In case of a tie, choose the smaller.at n=8A117429
• Second of two complementary trees generated by the squares; The other tree is A183420.at n=23A183421
• Numbers, a(n) where binomial(a(n), 5n-1) == 0 (mod 5) and binomial(a(n), k) != 0 (mod 5) for k != 5n - 1.at n=27A224251