138956

Appears in sequences

• Number of rooted identity trees with n nodes and 6 leaves.at n=8A055331
• Number of lower triangles of an n X n 0..5 array with each element differing from all of its horizontal and vertical neighbors by one.at n=5A194995
• 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=50A194998
• Number of lower triangles of a 6 X 6 0..n array with each element differing from all of its horizontal and vertical neighbors by one.at n=4A195002