Number of binary [ n,7 ] codes.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =8a(8) =43a(9) =213a(10) =1060a(11) =5468a(12) =29765a(13) =173035a(14) =1074526a(15) =7059804a(16) =48235007a(17) =336048291a(18) =2345912476a(19) =16193974418a(20) =109563962854a(21) =722594600193