Number of (n+1)X7 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero.

A204730

Number of (n+1)X7 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero.

Terms

    a(0) =171860a(1) =10332706a(2) =108530190a(3) =6063334774a(4) =72313926190

External references