# A146424 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 3
6 13
7 35
8 165
9 727
10 4597
11 49361
12 536263
13 7236179
14 123419355
15 2560850455
16 72571417743
17 2591027414559
18 113550328451315
19 6265506511430339
20 433231100847867929