# A114620 (b-file synthesized from sequence entry)
0 0
1 2
2 10
3 60
4 348
5 2030
6 11830
7 68952
8 401880
9 2342330
10 13652098
11 79570260
12 463769460
13 2703046502
14 15754509550
15 91824010800
16 535189555248
17 3119313320690
18 18180690368890
19 105964828892652
20 617608282987020