Number of n X n -2..2 arrays of 2X2 subblock diagonal sums minus antidiagonal sums for some (n+1)X(n+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.

A227055

Number of n X n -2..2 arrays of 2X2 subblock diagonal sums minus antidiagonal sums for some (n+1)X(n+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.