# A149383 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 48
5 177
6 737
7 3029
8 12988
9 56091
10 246868
11 1096597
12 4924501
13 22280718
14 101576635
15 465761626
16 2147731327
17 9949376489
18 46289161625
19 216169270117
20 1012953446513
21 4761286903537
22 22442684861765
23 106056033165046
24 502360129027589
25 2384677778156798
26 11342524317323837
27 54049170686961451