# A181609 (b-file synthesized from sequence entry)
2 2
3 3
4 7
5 23
6 108
7 604
8 3980
9 30186
10 258969
11 2479441
12 26207604
13 303119227
14 3807956707
15 51633582121
16 751604592219
17 11690365070546
18 193492748067369
19 3395655743755865
20 62980031819261211
21 1230967683216803500