Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..1 introduced in row major order.

A204487

Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..1 introduced in row major order.

Terms

    a(0) =610a(1) =1189a(2) =2547a(3) =5407a(4) =11331a(5) =23851a(6) =50897a(7) =109489a(8) =236402a(9) =512911a(10) =1118772a(11) =2440948a(12) =5333293a(13) =11686972a(14) =25595013a(15) =56075719a(16) =123070849a(17) =269926981a(18) =592042603a(19) =1300024973a(20) =2853037552a(21) =6260804838a(22) =13749466588a(23) =30182600469

External references