# A302837 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 16
5 30
6 252
7 399
8 4672
9 8100
10 111200
11 193006
12 3279888
13 5631093
14 114137072
15 196030350
16 4600308224
17 7873377297
18 210745840824
19 359490499457
20 10808589776800
21 18389567969010
22 613522956193532
23 1041400845949218
24 38179982045681856
25 64675343605547500
26 2584515863960831060