Number of binary codes of length 5 with n words.

Terms

a(0) =1a(1) =1a(2) =5a(3) =10a(4) =47a(5) =131a(6) =472a(7) =1326a(8) =3779a(9) =9013a(10) =19963a(11) =38073a(12) =65664a(13) =98804a(14) =133576a(15) =158658a(16) =169112a(17) =158658a(18) =133576a(19) =98804a(20) =65664a(21) =38073a(22) =19963a(23) =9013a(24) =3779a(25) =1326a(26) =472a(27) =131a(28) =47a(29) =10