# A084235 (b-file synthesized from sequence entry)
1 1
2 5
3 31
4 199
5 1637
6 8507
7 24110
8 95961
9 355541
10 1786062
11 6473791
12 30649362
13 109851909
14 456774199
15 2589994747
16 7613644886
17 37725066313
18 108500046711