67508

Appears in sequences

• a(n) = Sum_{k=0..2*n} (k+1)*T(n, 2*n-k), T given by A027960.at n=11A027982
• Number of n-node unlabeled rooted trees with thinning limbs and root outdegree (branching factor) 4.at n=15A244705
• Number of (n+2)X(6+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=9A253508