# A071728 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 29
4 94
5 311
6 1049
7 3597
8 12506
9 43992
10 156298
11 560082
12 2021980
13 7347281
14 26851465
15 98633085
16 363961890
17 1348553940
18 5015206350
19 18714132390
20 70045890660
21 262915076190
22 989394563274
23 3732136740498
24 14109191590724