Number of (undirected) Hamiltonian paths on the triangular grid with n vertices on each side.

A308144

Number of (undirected) Hamiltonian paths on the triangular grid with n vertices on each side.

Terms

    a(0) =1a(1) =3a(2) =12a(3) =114a(4) =1968a(5) =66312a(6) =4381020a(7) =578266212a(8) =153350225268

External references