Number of ternary Lyndon words of length n with trace 0 and subtrace 0 over GF(3).

Terms

a(0) =1a(1) =0a(2) =0a(3) =2a(4) =4a(5) =9a(6) =32a(7) =90a(8) =240a(9) =654a(10) =1804a(11) =4950a(12) =13664a(13) =37944a(14) =106272a(15) =298890a(16) =843796a(17) =2390595a(18) =6796160a(19) =19370696a(20) =55345680a(21) =158489298a(22) =454803100a(23) =1307556162a(24) =3765741324a(25) =10862667648a(26) =31381058880a(27) =90780903460a(28) =262951527460