352350

Appears in sequences

• Number of 9 X 9 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.at n=20A156401
• Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 20.at n=5A156474
• Triangle read by rows: T(n,k) (3 <= k < n) gives number of solutions to certain 1-loop scattering equations refined by MHV degree.at n=30A294735
• Triangle read by rows: T(n,k) (3 <= k < n) gives number of solutions to certain 1-loop scattering equations refined by MHV degree.at n=33A294735