Number of root classes of words in F_2 whose minimal words have length n.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =0a(8) =13a(9) =0a(10) =0a(11) =0a(12) =304a(13) =0a(14) =0a(15) =0a(16) =11395a(17) =0a(18) =0a(19) =0a(20) =478444a(21) =0a(22) =0a(23) =0