Number of primitive permutation groups of degree n.

Terms

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