# A149956 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 16
4 52
5 179
6 657
7 2445
8 9340
9 36701
10 145628
11 586312
12 2398468
13 9879421
14 41072067
15 172514552
16 728279781
17 3094286178
18 13241783880
19 56885626708
20 245535890251
21 1065461753201
22 4637394881411
23 20257808425487
24 88856696223318
25 390704372696703
26 1722913681845064
27 7622404131695837