Number of conjugacy classes in the symmetric group S_n with distinct cardinality.

Terms

a(0) =1a(1) =1a(2) =3a(3) =4a(4) =6a(5) =7a(6) =11a(7) =16a(8) =23a(9) =30a(10) =40a(11) =58a(12) =69a(13) =95a(14) =119a(15) =151a(16) =184a(17) =240a(18) =297a(19) =361a(20) =452a(21) =554a(22) =663a(23) =817a(24) =980a(25) =1177a(26) =1402a(27) =1665a(28) =1995a(29) =2346