Number of indecomposable binary [ n,6 ] codes without 0 columns.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =5a(8) =31a(9) =165a(10) =809a(11) =3759a(12) =16749a(13) =72828a(14) =311235a(15) =1311415a(16) =5445722a(17) =22237612a(18) =89039027a(19) =348676555a(20) =1332824259a(21) =4967096197a(22) =18036659429a(23) =63810587933a(24) =220001781595