# A095122 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 6
4 15
5 45
6 120
7 325
8 861
9 2278
10 5995
11 15753
12 41328
13 108345
14 283881
15 743590
16 1947351
17 5099221
18 13351528
19 34957341
20 91523685
21 239618886
22 627341331
23 1642418641
24 4299936480
25 11257426225
26 29472399505
27 77159865030
28 202007345631