# A157313 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 10
4 43
5 216
6 1326
7 9283
8 74667
9 672085
10 6730098
11 74031079
12 888657130
13 11552542691
14 161747905609
15 2426218982400
16 38820193151115
17 659943283568956
18 11879029341157575
19 225701557481993926
20 4514035666639844778
21 94794749015757064732
22 2085484976583065409751