Number of (n+2)X(6+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 3 4 5 or 6.
A251835
Number of (n+2)X(6+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 3 4 5 or 6.
Terms
- a(0) =2764828a(1) =182241310a(2) =13666111138a(3) =887220145536
External references
- oeis: A251835