Triangle read by rows: T(n,k) is the number of normal sequences of length n whose standard factorization into Lyndon words (aperiodic necklaces) has k factors.

A296372

Triangle read by rows: T(n,k) is the number of normal sequences of length n whose standard factorization into Lyndon words (aperiodic necklaces) has k factors.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =5a(5) =4a(6) =18a(7) =31a(8) =18a(9) =8a(10) =108a(11) =208a(12) =153a(13) =56a(14) =16a(15) =778a(16) =1700a(17) =1397a(18) =616a(19) =160a(20) =32a(21) =6756a(22) =15980a(23) =14668a(24) =7197a(25) =2196a(26) =432a(27) =64a(28) =68220a(29) =172326

External references