851073

Appears in sequences

• Number of Hamiltonian paths in a 7 X n grid starting at the lower left corner and finishing in the upper right corner.at n=7A333582
• Number of Hamiltonian paths in an 8 X (2n+1) grid starting at the lower left corner and finishing in the upper right corner.at n=3A333583
• G.f. A(x) satisfies A(x) = 1/(1 - x)^3 + x*A(x)^3/(1 - x).at n=7A366182