# A037606 (b-file synthesized from sequence entry)
1 1
2 8
3 51
4 307
5 1844
6 11067
7 66403
8 398420
9 2390523
10 14343139
11 86058836
12 516353019
13 3098118115
14 18588708692
15 111532252155
16 669193512931
17 4015161077588
18 24090966465531
19 144545798793187
20 867274792759124
21 5203648756554747