Number of orbits on points that are at n steps from 0 in D_7 lattice.
A008372
Number of orbits on points that are at n steps from 0 in D_7 lattice.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =17a(5) =30a(6) =54a(7) =86a(8) =139a(9) =209a(10) =313a(11) =448a(12) =638
External references
- oeis: A008372