Number of nonisomorphic groups with orders indexed by least prime signatures.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =5a(6) =14a(7) =15a(8) =4a(9) =51a(10) =14a(11) =52a(12) =13a(13) =267a(14) =50a(15) =231a(16) =47a(17) =2328a(18) =197a(19) =37a(20) =1543a(21) =12a(22) =177a(23) =208a(24) =56092a(25) =1045a(26) =162a(27) =20169a(28) =41a(29) =775