# A149664 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 61
5 249
6 1003
7 4115
8 17371
9 73519
10 315575
11 1367431
12 5946949
13 26092679
14 115017031
15 508924409
16 2263672565
17 10098869293
18 45205624797
19 203017643007
20 913862154449
21 4124692123161
22 18658670407501
23 84569931164973
24 384100732416711
25 1747491307163059
26 7963465982266133
27 36348101856151661