# A056334 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 9
5 31
6 111
7 454
8 1982
9 9130
10 43547
11 211658
12 1041316
13 5156641
14 25640000
15 127773440
16 637622320
17 3184387573
18 15910938734
19 79521737938
20 397510683092
21 1987259549544
22 9935420434636
23 49674470817194