# A037557 (b-file synthesized from sequence entry)
1 2
2 17
3 137
4 1098
5 8785
6 70281
7 562250
8 4498001
9 35984009
10 287872074
11 2302976593
12 18423812745
13 147390501962
14 1179124015697
15 9432992125577
16 75463937004618
17 603711496036945
18 4829691968295561