# A089471 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 66
4 680
5 9054
6 147811
7 2855574
8 63656423
9 1607072112
10 45294892304
11 1409197189256
12 47954491442089
13 1771493331491354
14 70590010219153189
15 3017771375030039066
16 137763757493141082536
17 6688261925293875095950