# A115830 (b-file synthesized from sequence entry)
0 0
1 11
2 110
3 1100
4 11000
5 110000
6 1100000
7 11000000
8 11000011
9 110000000
10 110000011
11 110000110
12 1100000000
13 1100000011
14 1100000110
15 1100001100
16 11000000000
17 11000000011
18 11000000110
19 11000001100
20 11000011000