# A110051 (b-file synthesized from sequence entry)
0 1
1 4
2 25
3 119
4 599
5 2887
6 14039
7 67767
8 327607
9 1581751
10 7638967
11 36883895
12 178097591
13 859930039
14 4152135095
15 20048276919
16 96801746359
17 467400158647
18 2256808013239
19 10896832949687
20 52614565424567
21 254045594545591