1403028

Appears in sequences

• Number of walks of length 2n on cubic lattice, starting and finishing at origin and staying in first (nonnegative) octant.at n=6A064037
• Square array read by antidiagonals of number of length 2k walks on an n-dimensional hypercubic lattice starting and finishing at the origin and staying in the nonnegative part.at n=48A064045
• Moment sequence of tr(A^2) in USp(6).at n=12A138541