# A149178 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 35
5 124
6 432
7 1653
8 6238
9 24009
10 95031
11 374816
12 1502701
13 6081138
14 24653680
15 101007864
16 415326581
17 1714309061
18 7118874021
19 29629533128
20 123789902876
21 518981830701
22 2180354287790
23 9187801076310
24 38803381924060
25 164201253368975
26 696395326261535
27 2958461375328120
28 12589876811836979