# A146613 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 7
7 21
8 49
9 235
10 1289
11 9339
12 82787
13 865777
14 11018603
15 179905507
16 3665014053
17 93285011401
18 2967105675995
19 116229643915377
20 5631229452463433