The number of Lyndon words of size n from an alphabet of 5 letters and 1st and 2nd letter of the alphabet with equal frequency in the words.

A349001

The number of Lyndon words of size n from an alphabet of 5 letters and 1st and 2nd letter of the alphabet with equal frequency in the words.

Terms

    a(0) =1a(1) =3a(2) =4a(3) =14a(4) =46a(5) =174a(6) =656a(7) =2640a(8) =10790a(9) =45340a(10) =193600a(11) =839820a(12) =3686424a(13) =16353924a(14) =73187456a(15) =330052646a(16) =1498335650a(17) =6841899606a(18) =31404443032a(19) =144814450188a(20) =670552118244

External references