Number of 2n-step self-avoiding closed walks on first octant of 3-dimensional cubic lattice, passing through origin.

A039618

Number of 2n-step self-avoiding closed walks on first octant of 3-dimensional cubic lattice, passing through origin.

Terms

    a(0) =1a(1) =0a(2) =3a(3) =18a(4) =138a(5) =1278a(6) =13410a(7) =154584a(8) =1919352a(9) =25273422a(10) =348989058a(11) =5011939788a(12) =74393974476

External references