# A146669 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 7
7 21
8 49
9 219
10 1317
11 9715
12 80153
13 817961
14 10735885
15 177805125
16 3599071193
17 90866799531
18 2886601451049
19 113383289044153
20 5503065770566291