# A321086 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 32
5 220
6 1812
7 17108
8 180512
9 2093760
10 26396160
11 358741328
12 5223336288
13 81079811280
14 1336407320080
15 23311138957200
16 429063111959808
17 8311760620707648
18 169072470759431232
19 3603666131945918144
20 80327823251439861760
21 1869212211081119135616
22 45331401566332423284864
23 1143967734536203174726784
24 29996686272924492809481216
25 816185909551276017516640000