Same as A007022, but with orientation-reversing isomorphisms forbidden.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =0a(7) =1a(8) =1a(9) =4a(10) =3a(11) =15a(12) =25a(13) =92a(14) =234a(15) =803a(16) =2469a(17) =8512a(18) =28290a(19) =98148a(20) =338673a(21) =1188338a(22) =4180854a(23) =14840031a(24) =52904562a(25) =189724510a(26) =683384218a(27) =2472961423a(28) =8984888982a(29) =32772085447