Number of lower triangles of an n X n 0..5 array with no element differing from any of its horizontal or vertical neighbors by more than one.
A194928
Number of lower triangles of an n X n 0..5 array with no element differing from any of its horizontal or vertical neighbors by more than one.
Terms
- a(0) =6a(1) =44a(2) =728a(3) =26316a(4) =2089736a(5) =364130672a(6) =139323386328
External references
- oeis: A194928