Number of equivalence classes of words in F_2, modulo all automorphisms of F_2, whose minimal words have length n.
A224073
Number of equivalence classes of words in F_2, modulo all automorphisms of F_2, whose minimal words have length n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =4a(6) =10a(7) =16a(8) =43a(9) =101a(10) =340a(11) =911a(12) =2544a(13) =7224a(14) =22616a(15) =65376a(16) =187754a(17) =545743a(18) =1653966a(19) =4832057a(20) =14027794
External references
- oeis: A224073