# A030932 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 27
5 139
6 839
7 5878
8 47025
9 423231
10 4232310
11 46555420
12 558665046
13 7262645598
14 101677038385
15 1525155575776
16 24402489212420
17 414842316611153
18 7467161699000770
19 141876072281014640
20 2837521445620292800