Number of lower triangles of an n X n 0..6 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less.
A195246
Number of lower triangles of an n X n 0..6 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less.
Terms
- a(0) =7a(1) =103a(2) =4823a(3) =709613a(4) =329060365a(5) =481573562101
External references
- oeis: A195246