# A037220 (b-file synthesized from sequence entry)
0 0
1 10
2 1011
3 1031
4 102113
5 10311213
6 10411223
7 1031221314
8 1041222314
9 1031321324
10 1031223314
11 1031223314
12 1031223314
13 1031223314
14 1031223314
15 1031223314
16 1031223314
17 1031223314
18 1031223314
19 1031223314
20 1031223314