# A353894 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 6
5 30
6 105
7 315
8 2128
9 24948
10 251415
11 2093025
12 16437036
13 148728294
14 1693067467
15 21459867975
16 270217289280
17 3338860150488
18 42428729660751
19 581966068060485
20 8654787480759700
21 135253842794286930
22 2163416823356628147
23 35313421249845594075