# A365121 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 40
4 192
5 993
6 5375
7 30081
8 172650
9 1010640
10 6010530
11 36214656
12 220590082
13 1356131892
14 8403647454
15 52436122717
16 329170499604
17 2077465903503
18 13173914483799
19 83897445169341
20 536355204428412
21 3440875097256529
22 22144300030907667