# A033296 (b-file synthesized from sequence entry)
1 1
2 6
3 42
4 326
5 2706
6 23526
7 211546
8 1951494
9 18366882
10 175674054
11 1702686090
12 16686795846
13 165079509042
14 1646340228006
15 16534463822010
16 167081444125702
17 1697551974416706
18 17330661859937670
19 177699201786231530