# A149528 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 11
4 55
5 155
6 775
7 2461
8 12305
9 41937
10 209685
11 749109
12 3745545
13 13841585
14 69207925
15 262382303
16 1311911515
17 5074609495
18 25373047475
19 99750359987
20 498751799935
21 1987223356735
22 9936116783675
23 40038441228455
24 200192206142275
25 814502846723719
26 4072514233618595
27 16708181701724503