# A033128 (b-file synthesized from sequence entry) 1 1 2 10 3 101 4 1011 5 10110 6 101101 7 1011011 8 10110110 9 101101101 10 1011011011 11 10110110110 12 101101101101 13 1011011011011 14 10110110110110 15 101101101101101 16 1011011011011011 17 10110110110110110 18 101101101101101101 19 1011011011011011011 20 10110110110110110110