Number of 2n-step polygons on cubic lattice.
A002896
Number of 2n-step polygons on cubic lattice.
Terms
- a(0) =1a(1) =6a(2) =90a(3) =1860a(4) =44730a(5) =1172556a(6) =32496156a(7) =936369720a(8) =27770358330a(9) =842090474940
External references
- oeis: A002896