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

A255143

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

Terms

    a(0) =115a(1) =371a(2) =1310a(3) =4576a(4) =16386a(5) =59681a(6) =217262a(7) =791181a(8) =2886865a(9) =10536452a(10) =38448744a(11) =140326648a(12) =512194269a(13) =1869459662a(14) =6823369543a(15) =24905092259a(16) =90902668054a(17) =331790760244

External references