Number of binary [ n,7 ] codes of dimension <= 7 without zero columns.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =36a(6) =80a(7) =193a(8) =497a(9) =1392a(10) =4282a(11) =14805a(12) =57875a(13) =258894a(14) =1321280a(15) =7570495a(16) =47305333a(17) =311742256a(18) =2103025726a(19) =14206632939a(20) =94726167427a(21) =618051904983