# A073030 (b-file synthesized from sequence entry)
2 1
3 11
4 101
5 1111
6 10001
7 111111
8 1010101
9 11011011
10 101000101
11 1111111111
12 10001010001
13 111111111111
14 1010100010101
15 11010011001011
16 101010101010101
17 1111111111111111
18 10001010001010001
19 111111111111111111