Array read by descending antidiagonals: T(n,k) is the number of oriented colorings of the triangular faces of a regular n-dimensional simplex using k or fewer colors.
A337883
Array read by descending antidiagonals: T(n,k) is the number of oriented colorings of the triangular faces of a regular n-dimensional simplex using k or fewer colors.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =5a(5) =1a(6) =4a(7) =15a(8) =40a(9) =1a(10) =5a(11) =36a(12) =1197a(13) =3504a(14) =1a(15) =6a(16) =75a(17) =18592a(18) =9753615a(19) =13724608a(20) =1a(21) =7a(22) =141a(23) =166885a(24) =3056311808a(27) =1a(28) =8a(29) =245a(30) =1019880a(31) =264940140875
External references
- oeis: A337883