# A027287 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 15
4 54
5 118
6 471
7 973
8 4128
9 8262
10 36481
11 71534
12 324876
13 627926
14 2911923
15 5568348
16 26241376
17 49767432
18 237550401
19 447567059
20 2158650078
21 4045351674
22 19679880649
23 36716551814
24 179920446576
25 334415846660