50512

Appears in sequences

• Number of permutations s of {1,2,...,n} such that |s(i)-i| for i=1,2,...,n are all distinct.at n=16A075866
• a(n) = (10^n + 4^n)/2.at n=5A081343
• Number of unlabeled rooted trees with n 4-colored nodes.at n=5A136793
• Number of length n+2 0..5 arrays with no three unequal elements in a row and no three equal elements in a row and new values 0..5 introduced in 0..5 order.at n=12A243724
• Indices k of Gram points g(k) for successive negative maximal values of the Riemann zeta function on the critical line.at n=21A325932