Positions of check bits in code in A075955.

Terms

a(0) =4095a(1) =258111a(2) =1864135a(3) =2987609a(4) =3582634a(5) =8080651a(6) =25473886a(7) =42292659a(8) =50776967a(9) =64081340a(10) =76144271a(11) =144414678a(12) =207994405a(13) =281196137a(14) =355414943a(15) =552485212a(16) =792267444a(17) =1128886935a(18) =1495779625a(19) =2139400570a(20) =2234223869