Number of (n+1)X(n+1) 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero.

A204868

Number of (n+1)X(n+1) 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero.

Terms

    a(0) =207a(1) =3167a(2) =53311a(3) =4256141a(4) =282748327a(5) =94493071327

External references