Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order.
A252909
Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order.
Terms
- a(0) =148002a(1) =1984711a(2) =31101826a(3) =551697392a(4) =10071548995a(5) =185083140208
External references
- oeis: A252909