# A220882 (b-file synthesized from sequence entry)
6 1
7 2
8 16
9 93
10 505
11 2548
12 12400
13 58140
14 266550
15 1198564
16 5312032
17 23263695
18 100910001
19 434217000
20 1855972096
21 7887862224
22 33359979546
23 140492933100
24 589495272736
25 2465455090098
26 10281760786682
27 42768958597992
28 177499631598976
29 735146520745000
30 3039095720959424
31 12542491305496152