# A147245 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 1
7 9
8 17
9 43
10 77
11 187
12 693
13 2641
14 10331
15 50859
16 230621
17 1381217
18 7944835
19 57500635
20 415589871
21 3698671025