# A035354 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 4
5 11
6 33
7 103
8 330
9 1077
10 3556
11 11895
12 40187
13 137049
14 471070
15 1630819
16 5680854
17 19899698
18 70053093
19 247711242
20 879441789
21 3133648932
22 11202930544
23 40172365842
24 144453506494
25 520759972064
26 1881787195944
27 6814766134276