# A037734 (b-file synthesized from sequence entry)
1 2
2 17
3 136
4 1091
5 8730
6 69841
7 558728
8 4469827
9 35758618
10 286068945
11 2288551560
12 18308412483
13 146467299866
14 1171738398929
15 9373907191432
16 74991257531459
17 599930060251674
18 4799440482013393