64538880domain: NAppears in sequencesa(n) = n-th elementary symmetric function of C(n,0), C(n,1), ..., C(n,n).at n=7A025134Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).at n=11A234436