Number of (n+2) X (1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 4 or more.
A251854
Number of (n+2) X (1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 4 or more.
Terms
- a(0) =2506a(1) =23664a(2) =245388a(3) =2525037a(4) =25675786a(5) =261035198a(6) =2662774377a(7) =27176100008a(8) =277114175198
External references
- oeis: A251854