Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock nonsingular.

A183689

Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock nonsingular.

Terms

    a(0) =50a(1) =4594a(2) =2235330a(3) =5848268518

External references