Number of nonequivalent symmetric sets whose translations cover {1..n}.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =10a(6) =12a(7) =19a(8) =23a(9) =36a(10) =44a(11) =68a(12) =84a(13) =128a(14) =161a(15) =243a(16) =308a(17) =462a(18) =592a(19) =882a(20) =1140a(21) =1690a(22) =2200a(23) =3249a(24) =4255a(25) =6264a(26) =8246a(27) =12110a(28) =16008a(29) =23466