# A189871 (b-file synthesized from sequence entry)
1 1
2 0
3 0
4 2
5 10
6 0
7 8
8 24
9 72
10 116
11 384
12 1660
13 7344
14 24364
15 130408
16 743360
17 4242704
18 27018788
19 190618152
20 1431986780
21 11053915716