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

A255152

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

Terms

    a(0) =28a(1) =62a(2) =141a(3) =331a(4) =773a(5) =1782a(6) =4105a(7) =9484a(8) =21926a(9) =50673a(10) =117087a(11) =270537a(12) =625110a(13) =1444437a(14) =3337660a(15) =7712270a(16) =17820549a(17) =41177539a(18) =95148093a(19) =219856758a(20) =508018449a(21) =1173867596a(22) =2712431286a(23) =6267558345a(24) =14482316343a(25) =33463986209a(26) =77324534486

External references