# A147508 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 3
7 9
8 23
9 81
10 267
11 1053
12 6173
13 40853
14 301993
15 2684783
16 27089119
17 322029889
18 4723820567
19 81998776493
20 1660922956591
21 39864394187483
22 1124746291185333