# A051915 (b-file synthesized from sequence entry)
1 0
2 1
3 2
4 3
5 5
6 12
7 18
8 35
9 51
10 53
11 78
12 209
13 396
14 4166
15 9091
16 9587
17 13357
18 15917
19 17652
20 46127