# A118930 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 13
5 41
6 166
7 652
8 3494
9 18118
10 114076
11 681176
12 5016892
13 35377564
14 288204008
15 2232198256
16 21124254181
17 191779964597
18 2011347229114
19 19840403629108
20 231266808172181
21 2553719667653281
22 31743603728993542