A006819 Trails of length n on cubic lattice.

1, 6, 30, 150, 750, 3726, 18438, 90966, 447918, 2201622, 10809006, 52999446, 259668942, 1271054982, 6218232414, 30399142614

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• walk

References

• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• A. J. Guttmann, Lattice trails II: numerical results, J. Phys. A 22 (1989), 575-588.