# A147094 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 3
5 7
6 15
7 31
8 73
9 307
10 1451
11 6775
12 33773
13 192865
14 1471507
15 13382667
16 137085697
17 1565839497
18 20450552451
19 319414253795
20 5882181538191
21 126047394686961
22 3114606848932875