# A037498 (b-file synthesized from sequence entry)
1 1
2 5
3 27
4 136
5 680
6 3402
7 17011
8 85055
9 425277
10 2126386
11 10631930
12 53159652
13 265798261
14 1328991305
15 6644956527
16 33224782636
17 166123913180
18 830619565902
19 4153097829511
20 20765489147555
21 103827445737777
22 519137228688886