# A171859 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 1
4 6
5 28
6 127
7 598
8 2984
9 15851
10 89532
11 536152
12 3392609
13 22609852
14 158220300
15 1159380201
16 8873605258
17 70778190768
18 587125257319
19 5055713850058
20 45114387675316
21 416535887361323
22 3973511993495144
23 39112086371684844