# A088714 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 69
5 419
6 2809
7 20353
8 157199
9 1281993
10 10963825
11 97828031
12 907177801
13 8716049417
14 86553001779
15 886573220093
16 9351927111901
17 101447092428243
18 1130357986741545
19 12923637003161409
20 151479552582252239