3751608960

Appears in sequences

• Number of lower triangles of an n X n 0..4 array with new values introduced in row major order 0..4 and no two horizontal or vertical neighbors of any element equal.at n=6A194889
• T(n,k)=Number of lower triangles of an n X n 0..k array with new values introduced in row major order 0..k and no two horizontal or vertical neighbors of any element equal.at n=51A194893