# A147126 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 3
7 9
8 23
9 55
10 223
11 1115
12 7199
13 49215
14 368043
15 3428835
16 40706551
17 594200493
18 10158791409
19 204811760131
20 4951116757551
21 144268283766901