# A037729 (b-file synthesized from sequence entry)
1 2
2 20
3 203
4 2031
5 20312
6 203120
7 2031203
8 20312031
9 203120312
10 2031203120
11 20312031203
12 203120312031
13 2031203120312
14 20312031203120
15 203120312031203
16 2031203120312031