Number of 5-ary Lyndon words of length n over Z_5 with trace 1 and subtrace 1.

A074418

Number of 5-ary Lyndon words of length n over Z_5 with trace 1 and subtrace 1.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =6a(4) =25a(5) =99a(6) =450a(7) =1965a(8) =8736a(9) =39050a(10) =177500a(11) =813490a(12) =3756250a(13) =17438400a(14) =81380200a(15) =381463875a(16) =1795156250a(17) =8477122367a(18) =40154790296a(19) =190734843750a(20) =908261160564

External references