# A221990 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 0
6 0
7 60
8 140
9 518
10 1444
11 8556
12 31992
13 220456
14 984208
15 7453080
16 39692800
17 289981136
18 1467791790
19 14316379108
20 86001855074
21 949804475890
22 6494842788046
23 73636377696714