# A149526 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 11
4 51
5 159
6 751
7 2595
8 12379
9 45945
10 220889
11 854271
12 4130823
13 16478877
14 80029233
15 326453435
16 1590666183
17 6603678257
18 32262733253
19 135823875601
20 664990841141
21 2831718946427
22 13888824435955
23 59710368550477
24 293299614705161
25 1271144524654151
26 6251897521950595
27 27284088313038085