# A087806 (b-file synthesized from sequence entry)
0 1
1 0
2 3
3 15
4 117
5 998
6 9335
7 93054
8 974085
9 10596336
10 118903599
11 1368808785
12 16099107057
13 192831403950
14 2346213458667
15 28938983482353
16 361243476790605
17 4557409523980664
18 58041112443611015
19 745468216328206179
20 9647990383169438001
21 125732717320525253430