# A353180 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 25
5 130
6 810
7 5880
8 48790
9 455491
10 4725020
11 53915730
12 671141130
13 9050528630
14 131437406100
15 2045160117000
16 33944105995801
17 598591246152934
18 11176863039391538
19 220287874849834596
20 4570225746232479690
21 99557506547622369750
22 2272028399094852806100