Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors.
A282857
Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors.
Terms
- a(0) =7a(1) =31a(2) =131a(3) =583a(4) =2562a(5) =11250a(6) =49471a(7) =217459a(8) =955873a(9) =4201865a(10) =18470437a(11) =81191949a(12) =356902120a(13) =1568863280a(14) =6896378669a(15) =30314967625a(16) =133257945179a(17) =585772685663
External references
- oeis: A282857