# A147188 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 3
7 7
8 15
9 41
10 163
11 697
12 3471
13 20005
14 143359
15 1211791
16 12104355
17 142437683
18 2011344929
19 33622364965
20 665157511111