# A071301 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 6
5 3
6 15
7 60
8 70
9 140
10 540
11 37800
12 8316
13 207900
14 1351350
15 75675600
16 141891750
17 11176704
18 308756448000
19 222304642560
20 15084957888000
21 234654900480000
22 1267136462592000
23 139385010885120000
24 213723683357184000