Triangle read by rows: T(n,k) is the number of achiral colorings of the edges of a regular n-dimensional simplex using exactly k colors. Row n has (n+1)*n/2 columns.
A327090
Triangle read by rows: T(n,k) is the number of achiral colorings of the edges of a regular n-dimensional simplex using exactly k colors. Row n has (n+1)*n/2 columns.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =0a(4) =1a(5) =8a(6) =18a(7) =12a(8) =0a(9) =0a(10) =1a(11) =26a(12) =306a(13) =1400a(14) =2800a(15) =2520a(16) =840a(17) =0a(18) =0a(19) =0a(20) =1a(21) =126a(22) =7971a(23) =153660a(24) =1268475a(25) =5463990a(26) =13534290a(27) =20018880a(28) =17478720a(29) =8316000
External references
- oeis: A327090