# A161573 (b-file synthesized from sequence entry)
0 1
1 30
2 464
3 4929
4 40424
5 272801
6 1576815
7 8023545
8 36665715
9 152763040
10 587171992
11 2101880476
12 7061614495
13 22410120565
14 67543053580
15 194231327451
16 535041945135
17 1416733053564
18 3616888634024
19 8926662604634
20 21349085390900