# A371605 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 10
5 50
6 230
7 1260
8 9240
9 76440
10 651000
11 6006000
12 62739600
13 719518800
14 8736327600
15 112588476000
16 1558917360000
17 23070967920000
18 360507459312000
19 5925688056288000
20 102619150714080000
21 1869557514945120000
22 35676360727207200000