# A149952 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 15
4 50
5 180
6 672
7 2604
8 10323
9 41831
10 172429
11 720543
12 3049052
13 13030183
14 56185637
15 244129491
16 1067890597
17 4699223135
18 20788315074
19 92400789578
20 412460510507
21 1848288462615
22 8311490226015
23 37495508818308
24 169649803369283
25 769655804205711
26 3500411708041304
27 15956530625752614