Number of indecomposable binary [ n,3 ] codes without 0 columns.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =5a(6) =10a(7) =18a(8) =31a(9) =51a(10) =79a(11) =121a(12) =177a(13) =254a(14) =356a(15) =490a(16) =661a(17) =882a(18) =1157a(19) =1501a(20) =1926a(21) =2445a(22) =3073a(23) =3834a(24) =4740