# A037743 (b-file synthesized from sequence entry)
1 2
2 21
3 213
4 2130
5 21302
6 213021
7 2130213
8 21302130
9 213021302
10 2130213021
11 21302130213
12 213021302130
13 2130213021302
14 21302130213021
15 213021302130213
16 2130213021302130
17 21302130213021302
18 213021302130213021
19 2130213021302130213
20 21302130213021302130