# A303485 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 8
4 66
5 512
6 5269
7 57459
8 711742
9 9610222
10 139735699
11 2183555015
12 36543300668
13 649320343729
14 12174674648730
15 240360451018461
16 4975239937954534
17 107600744797471150
18 2426579187889852885
19 56901290353169050995
20 1384258146777832889697