# A155179 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 51
4 216
5 915
6 3876
7 16419
8 69552
9 294627
10 1248060
11 5286867
12 22395528
13 94868979
14 401871444
15 1702354755
16 7211290464
17 30547516611
18 129401356908
19 548152944243
20 2322013133880
21 9836205479763
22 41666835052932