# A099448 (b-file synthesized from sequence entry)
0 1
1 5
2 19
3 65
4 216
5 715
6 2369
7 7855
8 26051
9 86400
10 286549
11 950345
12 3151831
13 10453085
14 34667784
15 114976135
16 381319781
17 1264651795
18 4194233399
19 13910227200
20 46133441401
21 153002131805
22 507433471819
23 1682909416265
24 5581389996216