Triangle read by rows: T(n,k) = number of chiral pairs of color patterns (set partitions) in a row of length n using exactly k colors (subsets).

A320525

Triangle read by rows: T(n,k) = number of chiral pairs of color patterns (set partitions) in a row of length n using exactly k colors (subsets).

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =2a(8) =2a(9) =0a(10) =0a(11) =6a(12) =10a(13) =4a(14) =0a(15) =0a(16) =12a(17) =40a(18) =28a(19) =6a(20) =0a(21) =0a(22) =28a(23) =141a(24) =167a(25) =64a(26) =9a(27) =0a(28) =0a(29) =56

External references