Number of (n+1)X(n+1) 0..3 arrays with the array of 2X2 subblock determinants symmetric.

A187455

Number of (n+1)X(n+1) 0..3 arrays with the array of 2X2 subblock determinants symmetric.

Terms

    a(0) =256a(1) =38464a(2) =34166592a(3) =99952737952

External references