# A019513 (b-file synthesized from sequence entry)
1 1
2 10
3 100
4 101
5 110
6 200
7 201
8 1000
9 1001
10 1010
11 1100
12 1101
13 1110
14 1200
15 10000
16 10001
17 10010
18 10100
19 10101
20 10110
21 10200
22 10201
23 11000
24 11001
25 11010
26 11100
27 11101
28 11110
29 11200
30 11201
31 12000