Number of lower triangles of an n X n 0..4 array with each element unequal to the sum mod 5 of its horizontal and vertical neighbors.
A194501
Number of lower triangles of an n X n 0..4 array with each element unequal to the sum mod 5 of its horizontal and vertical neighbors.
Terms
- a(0) =4a(1) =64a(2) =4160a(3) =1048560a(4) =1073741824
External references
- oeis: A194501