# A263731 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 14
5 38
6 127
7 411
8 1492
9 6478
10 27635
11 130093
12 695563
13 3762131
14 21947993
15 141325992
16 926081758
17 6469911674
18 48818612195