Number of (n+1)X4 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero.

A204727

Number of (n+1)X4 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero.

Terms

    a(0) =4772a(1) =44726a(2) =264998a(3) =2122560a(4) =14348560a(5) =108530190a(6) =763490340a(7) =5669180550a(8) =40529890856a(9) =299152763686

External references