# A333883 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 9
9 37
10 121
11 331
12 793
13 1718
14 5163
15 32281
16 217921
17 1188709
18 5291353
19 20031170
20 66744741
21 267996541
22 2030569465
23 18368560519
24 138812739409
25 853152218102
26 4409607501927
27 19826125988257
28 99717123889777
29 871344991322017
30 9658479225877057