Number of binary [ n,5 ] codes of dimension <= 5 without zero columns.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =35a(6) =73a(7) =161a(8) =363a(9) =837a(10) =1963a(11) =4721a(12) =11477a(13) =28220a(14) =69692a(15) =171966a(16) =421972a(17) =1025811a(18) =2462143a(19) =5821962a(20) =13540152a(21) =30942230a(22) =69443492a(23) =153038397a(24) =331208859a(25) =704147310a(26) =1471172776a(27) =3022148872a(28) =6107363788a(29) =12148478891