Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7.
A251993
Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7.
Terms
- a(0) =1198a(1) =6094a(2) =43572a(3) =340164a(4) =2708560a(5) =21680096a(6) =173871388a(7) =1395137546a(8) =11195863432a(9) =89849246828a(10) =721067681954
External references
- oeis: A251993