# A161899 (b-file synthesized from sequence entry)
0 1
1 21
2 230
3 1750
4 10394
5 51338
6 219373
7 833129
8 2867249
9 9073845
10 26706681
11 73769301
12 192639951
13 478480891
14 1136148412
15 2590157556
16 5690334091
17 12085148911
18 24881271591
19 49780020675
20 96990931345
21 184385864445