# A346970 (b-file synthesized from sequence entry)
1 2
2 3
3 5
4 10
5 21
6 55
7 182
8 357
9 1105
10 2958
11 16588
12 51243
13 106981
14 608685
15 3003455
16 7497910
17 52350909
18 168539462
19 1822961393
20 3079378759