Number of binary [ n,6 ] codes.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =7a(7) =32a(8) =131a(9) =516a(10) =1988a(11) =7664a(12) =29765a(13) =117169a(14) =467266a(15) =1880517a(16) =7588675a(17) =30491836a(18) =121191234a(19) =473940269a(20) =1816579108a(21) =6806904522a(22) =24897540538a(23) =88831250408a(24) =309108741706