# A037090 (b-file synthesized from sequence entry) 0 1 1 10 2 11 3 101 4 110 5 1001 6 10001 7 10010 8 10011 9 100001 10 100010 11 100011 12 100101 13 100110 14 101001 15 110001 16 110010 17 1000001 18 10000001 19 100000001 20 100000010 21 100000011 22 100000101 23 100000110 24 100001001 25 100010001 26 100010010 27 100010011