Number of axis-aligned 2 X 2 squares in the 3D projection of a 3n-dimensional hypercube with side length 2.
A388140
Number of axis-aligned 2 X 2 squares in the 3D projection of a 3n-dimensional hypercube with side length 2.
Terms
- a(0) =6a(1) =108a(2) =1176a(3) =10800a(4) =92256a(5) =762048a(6) =6193536a(7) =49939200a(8) =401081856a(9) =3214937088a(10) =25744644096a(11) =206057779200
External references
- oeis: A388140