Number of indecomposable binary [ n,7 ] codes without 0 columns.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =7a(9) =51a(10) =361a(11) =2484a(12) =16749a(13) =113662a(14) =784390a(15) =5517476a(16) =39291974a(17) =280215385a(18) =1979345466a(19) =13726798428a(20) =92895863119a(21) =611213599093