60877

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 25.at n=14A031613
• Expansion of e.g.f.: ((1-x)/(1-2*x))*exp(x/(1-x)).at n=6A059115
• Triangle T(n,k) read by rows of partially ordered sets ("posets") with n unlabeled nodes and k maximal elements (0 <= k <= n).at n=47A065066
• a(n) = A077706(n+1)/A077706(n).at n=19A077707