547889

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 87.at n=6A031675
• a(n) = Sum_{k=0..floor((n-1)/3)} 2^k * Stirling2(n,3*k+1).at n=11A357783
• Prime numbersat n=45162