List of words over {1,7} with equal numbers of 1's and 7's.

Terms

a(0) =17a(1) =71a(2) =1177a(3) =1717a(4) =1771a(5) =7117a(6) =7171a(7) =7711a(8) =111777a(9) =117177a(10) =117717a(11) =117771a(12) =171177a(13) =171717a(14) =171771a(15) =177117a(16) =177171a(17) =177711a(18) =711177a(19) =711717a(20) =711771a(21) =717117a(22) =717171a(23) =717711a(24) =771117a(25) =771171a(26) =771711a(27) =777111