# A149454 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 49
5 198
6 822
7 3529
8 15479
9 69033
10 311992
11 1426666
12 6580201
13 30587772
14 143122551
15 673348718
16 3183437184
17 15113727614
18 72019102558
19 344308018891
20 1650844243543
21 7935833965393
22 38237726668241
23 184631028260387
24 893191083199476
25 4328485864367581
26 21009390791266280
27 102121755567680032