Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0.

A256744

Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0.

Terms

    a(0) =2065a(1) =2512a(2) =3752a(3) =5888a(4) =10360a(5) =18688a(6) =33616a(7) =61568a(8) =112928a(9) =209024a(10) =394816a(11) =732800a(12) =1397888a(13) =2665088a(14) =5068544a(15) =9757312a(16) =18928128a(17) =36301440a(18) =71073280a(19) =138021504a(20) =269741056a(21) =527544960a(22) =1039244800a(23) =2031272576a(24) =4023613440a(25) =7901280896

External references