Number of binary Lyndon words of length n with trace 0 and subtrace 0 over Z_2.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =5a(7) =8a(8) =15a(9) =24a(10) =45a(11) =80a(12) =155a(13) =288a(14) =550a(15) =1024a(16) =1935a(17) =3626a(18) =6885a(19) =13056a(20) =24940a(21) =47616a(22) =91225a(23) =174760a(24) =335626a(25) =645120a(26) =1242600a(27) =2396160a(28) =4627915a(29) =8947294