# A088727 (b-file synthesized from sequence entry)
2 5
3 28
4 97
5 1025
6 4160
7 18571
8 390626
9 1953637
10 9824674
11 53022429
12 2176782337
13 13060702208
14 78368947065
15 471258726400
16 2973697798081
17 232630513987208
18 1628413598172593
19 11398896347634610
20 79793365809239777
21 559022701241487132
22 4041442752425255185