# A049186 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 11
5 45
6 197
7 901
8 4259
9 20643
10 102035
11 512365
12 2606421
13 13403715
14 69568071
15 363946211
16 1917148173
17 10160087333
18 54132552109
19 289790960735
20 1557980372127
21 8408281616305
22 45536927325809
23 247397689058521