# A147394 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 1
7 3
8 7
9 15
10 27
11 67
12 281
13 1263
14 5491
15 23639
16 128337
17 894617
18 7261755
19 63564439
20 605898697
21 6745478781
22 88749999709
23 1352715152779