# A147102 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 3
5 7
6 15
7 33
8 93
9 429
10 2069
11 10289
12 55429
13 387995
14 3482253
15 35863559
16 411870399
17 5523860439
18 89237334993
19 1723598801687
20 38814880673445
21 1022726070574065