# A149104 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 8
4 34
5 86
6 379
7 1109
8 4982
9 15733
10 71949
11 241112
12 1113488
13 3883382
14 18098701
15 65184740
16 305739740
17 1128669680
18 5322848456
19 20056405409
20 95002397740
21 364024517530
22 1730702331804
23 6727132522992
24 32084009850479
25 126237885355729
26 603707726422516
27 2400683361569746
28 11507951243830815