# A037616 (b-file synthesized from sequence entry)
1 1
2 12
3 110
4 991
5 8922
6 80300
7 722701
8 6504312
9 58538810
10 526849291
11 4741643622
12 42674792600
13 384073133401
14 3456658200612
15 31109923805510
16 279989314249591
17 2519903828246322
18 22679134454216900
19 204112210087952101
20 1837009890791568912
21 16533089017124120210