List of words over {1,3} with equal numbers of 1's and 3's.

Terms

a(0) =13a(1) =31a(2) =1133a(3) =1313a(4) =1331a(5) =3113a(6) =3131a(7) =3311a(8) =111333a(9) =113133a(10) =113313a(11) =113331a(12) =131133a(13) =131313a(14) =131331a(15) =133113a(16) =133131a(17) =133311a(18) =311133a(19) =311313a(20) =311331a(21) =313113a(22) =313131a(23) =313311a(24) =331113a(25) =331131a(26) =331311a(27) =333111