# A037555 (b-file synthesized from sequence entry)
1 2
2 13
3 79
4 476
5 2857
6 17143
7 102860
8 617161
9 3702967
10 22217804
11 133306825
12 799840951
13 4799045708
14 28794274249
15 172765645495
16 1036593872972
17 6219563237833
18 37317379426999
19 223904276561996
20 1343425659371977