Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
A201536
Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =9a(1) =175a(2) =3354a(3) =91425a(4) =2446147a(5) =61807736a(6) =1408677515a(7) =28646055184a(8) =523398227137
External references
- oeis: A201536