Array read by descending antidiagonals: T(n,k) is the number of unoriented colorings of the edges of a regular n-dimensional orthoplex (cross polytope) using k or fewer colors.
A337412
Array read by descending antidiagonals: T(n,k) is the number of unoriented colorings of the edges of a regular n-dimensional orthoplex (cross polytope) using k or fewer colors.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =6a(5) =1a(6) =4a(7) =21a(8) =144a(9) =1a(10) =5a(11) =55a(12) =12111a(13) =49127a(14) =1a(15) =6a(16) =120a(17) =358120a(18) =740360358a(19) =293122232a(20) =1a(21) =7a(22) =231a(23) =5131650a(24) =733776248840a(27) =1a(28) =8a(29) =406a(30) =45528756a(35) =1
External references
- oeis: A337412