# A186724 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 0
4 1
5 1
6 2
7 1
8 4
9 1
10 10
11 3
12 37
13 32
14 340
15 1608
16 18020
17 193907
18 2867725
19 32674058
20 1581632114
21 6705889824