Number of 2n-step polygons on cubic lattice.
A001409
Number of 2n-step polygons on cubic lattice.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =22a(4) =207a(5) =2412a(6) =31754a(7) =452640a(8) =6840774a(9) =108088232a(10) =1768560270a(11) =29764630632a(12) =512705615350
External references
- oeis: A001409