# A149993 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 17
4 59
5 204
6 755
7 2886
8 10983
9 42642
10 169339
11 673729
12 2696817
13 10941944
14 44610497
15 182309217
16 750649555
17 3106888066
18 12882897639
19 53637560223
20 224296097237
21 939822049608
22 3947315869157
23 16633079275264
24 70233934528157
25 297056448537970
26 1259315399665313
27 5348993388208203