# A020132 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 3
5 10
6 51
7 319
8 2311
9 19061
10 176311
11 1807182
12 20330789
13 249052162
14 3299941146
15 47024161318
16 717118460091
17 11653174976469
18 201017268344079
19 3668565147279424
20 70619879085128904
21 1430052551473860293