Number of nX4 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself.
A201725
Number of nX4 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself.
Terms
- a(0) =35a(1) =3567a(2) =499474a(3) =56836178a(4) =4720850001a(5) =299927801278
External references
- oeis: A201725