# A146818 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 3
6 9
7 23
8 59
9 317
10 2143
11 14651
12 111875
13 1267355
14 18704275
15 315484781
16 6350976523
17 167797579971
18 5630142919363
19 228828878480313