99892

Appears in sequences

• Number of peaks in all Dyck n-paths after changing each valley to a peak by the transform DU -> UD.at n=10A216318
• Number of cyclic subgroups of the group GL(2, Z(n)), counting conjugates as distinct.at n=35A316560
• a(n) = Sum_{k=0..floor(n/2)} (k+1) * binomial(k,n-2*k)^2.at n=21A375218
• G.f. A(x) satisfies A(x) = 1/(1 - x/(1 - x*A(x)^4)^3).at n=7A391651