# A049155 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 11
4 45
5 195
6 887
7 4171
8 20113
9 98913
10 494211
11 2501643
12 12801697
13 66118683
14 344216175
15 1804412607
16 9516313329
17 50457415057
18 268812773283
19 1438230290611
20 7724625806901
21 41633190509539
22 225101873722055