This is now the same as A108718. Cheers, Robert On Oct 25 2015, M. F. Hasler wrote: >Dear SeqFans, >Eric agreed with the correction I suggested, >S = 1, 21, 2, 11, 3, 4, 111, 1122, 5, 6, 7, 8, 9, 22, ... >cf. http://oeis.org/draft/A261299 > >Have a nice week, > >Maximilian >