Positions of check bits in code in A075934.

Terms

a(0) =31a(1) =103a(2) =171a(3) =213a(4) =301a(5) =342a(6) =439a(7) =475a(8) =494a(9) =558a(10) =595a(11) =911a(12) =1075a(13) =1114a(14) =1189a(15) =1287a(16) =1606a(17) =1727a(18) =1996a(19) =2102a(20) =2140a(21) =2225a(22) =2339a(23) =2667a(24) =2691a(25) =3240a(26) =3733a(27) =4153a(28) =4171a(29) =4371