# A155218 (b-file synthesized from sequence entry)
2 1
3 7
4 19
5 64
6 604
7 5668
8 60291
9 1139786
10 28911749
11 917529031
12 42684328880
13 2779416860900
14 242990212063594
15 29572386974464964
16 5010503933132486018
17 1166195763716912084751
18 374917567112932723176757