229348

Appears in sequences

• Expansion of (2-4*x+x^3)/((1-x)*(1-2*x-x^2+x^3)).at n=16A052949
• Number of (undirected) Hamiltonian paths in the n X n grid graph.at n=5A120443
• Number of Hamiltonian paths in P_6 X P_n.at n=5A145402
• Array read by antidiagonals: T(m,n) is the number of (undirected) Hamiltonian paths in the m X n grid graph.at n=60A332307
• Triangle read by rows: T(n,k) is the number of paths traveling orthogonally on an n X k grid that visit every cell.at n=20A366399