3293184

Appears in sequences

• 6*s*t*(4*s^4 + 3*t^4), where s > 0, t = 1..s.at n=31A241923
• Array read by antidiagonals: T(n,k) is the number of permutations of k indistinguishable copies of 1..n with exactly 2 local maxima.at n=19A334773
• a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(2*k+2,2*n-6*k+1).at n=19A387555