# A047127 (b-file synthesized from sequence entry)
0 1
1 3
2 10
3 35
4 127
5 467
6 1736
7 6510
8 24591
9 93427
10 356620
11 1366586
12 5254256
13 20259304
14 78309078
15 303346956
16 1177325247
17 4577098533
18 17821458618
19 69484705346
20 271251048911
21 1060085370591
22 4147198630980
23 16239629491179