Number of lower triangles of an n X n 0..6 array with each element differing from all of its horizontal and vertical neighbors by one.
A194996
Number of lower triangles of an n X n 0..6 array with each element differing from all of its horizontal and vertical neighbors by one.
Terms
- a(0) =7a(1) =22a(2) =114a(3) =888a(4) =10804a(5) =199988a(6) =5740166a(7) =251606900a(8) =17066691742
External references
- oeis: A194996