# A020103 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 2
5 7
6 33
7 200
8 1436
9 11742
10 107810
11 1097701
12 12274283
13 149523080
14 1970986053
15 27952165839
16 424364699555
17 6866992410975
18 117987415061287
19 2145225728387030
20 41149329880878478
21 830468293959547465