# A027838 (b-file synthesized from sequence entry)
1 1
2 7
3 22
4 111
5 486
6 3772
7 29142
8 275871
9 2830459
10 32028882
11 392744078
12 5201524044
13 73943424582
14 1123603726896
15 18176728661832
16 311951284854975
17 5661698774848910
18 108355867352001811
19 2181096921557783966
20 46066653293892718506
21 1018705098450761473704