Number of (n+2) X (2+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 2 or 7.
A251911
Number of (n+2) X (2+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 2 or 7.
Terms
- a(0) =950384a(1) =34096384a(2) =1228480800a(3) =44527823912
External references
- oeis: A251911