# A196497 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 30
5 170
6 1242
7 9534
8 86118
9 797778
10 8327410
11 88438966
12 1032534190
13 12233231738
14 156832510922
15 2038914853870
16 28368720701302
17 400233587440290
18 5994141844357346
19 91033137985948774
20 1458360235236325182
21 23691777860254217802
22 403933868741833240506