# A380121 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 6
4 20
5 50
6 126
7 294
8 1008
9 2592
10 7425
11 18150
12 62920
13 163592
14 496860
15 1242150
16 4331600
17 11328800
18 35581680
19 90140256
20 315490896
21 828163602
22 2658338298
23 6793531206
24 23836951600
25 62728820000
26 204451146900
27 525731520600
28 1848025951200
29 4872068416800
30 16059866355000