# A103433 (b-file synthesized from sequence entry)
0 0
1 1
2 5
3 30
4 199
5 1355
6 9276
7 63565
8 435665
9 2986074
10 20466835
11 140281751
12 961505400
13 6590256025
14 45170286749
15 309601751190
16 2122041971551
17 14544692049635
18 99690802375860
19 683290924581349
20 4683345669693545