# A103581 (b-file synthesized from sequence entry)
1 1
2 10
3 111
4 1100
5 11101
6 111110
7 1111011
8 11111000
9 111111001
10 1111111010
11 11111111111
12 111111110100
13 1111111110101
14 11111111110110
15 111111111110011
16 1111111111110000
17 11111111111110001
18 111111111111110010