39087

Appears in sequences

• Sum of the lengths of the first descents in all hill-free Dyck paths of semilength n (a hill in a Dyck path is a peak at level 1).at n=11A118974
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2>=2n.at n=34A211645
• Numbers of the form (5^j + 7^k)/2, for j and k >= 0.at n=44A226792
• Positions of 1 in A328018.at n=9A328019
• a(n) = Sum_{k=1..n} (-1)^(k+1) * floor(n/k)^3.at n=34A344721
• Number of integer compositions of n whose leaders of weakly increasing runs are distinct.at n=21A374632