# A120920 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 55
4 276
5 1464
6 8058
7 45543
8 262626
9 1538607
10 9130446
11 54761628
12 331403447
13 2021021082
14 12407102937
15 76611488305
16 475493441604
17 2964664310319
18 18560063203353
19 116621922800283
20 735236268006654