2059822

Appears in sequences

• Number of lower triangles of an n X n 0..4 array with each element differing from all of its horizontal and vertical neighbors by one.at n=6A194994
• T(n,k)=Number of lower triangles of an n X n 0..k array with each element differing from all of its horizontal and vertical neighbors by one.at n=51A194998
• Number of lower triangles of a 7 X 7 0..n array with each element differing from all of its horizontal and vertical neighbors by one.at n=3A195003