Number of (n+1)X(n+1) 0..4 arrays with the array of 2X2 subblock determinants symmetric.

A187456

Number of (n+1)X(n+1) 0..4 arrays with the array of 2X2 subblock determinants symmetric.

Terms

    a(0) =625a(1) =187525a(2) =450657775

External references