# A171199 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 8
4 25
5 83
6 289
7 1041
8 3847
9 14504
10 55569
11 215727
12 846761
13 3354858
14 13398965
15 53888063
16 218053915
17 887107888
18 3626373205
19 14887942624
20 61358959587
21 253771944529
22 1052917272543
23 4381374717994
24 18280470530047