# A027992 (b-file synthesized from sequence entry)
0 1
1 6
2 22
3 66
4 178
5 450
6 1090
7 2562
8 5890
9 13314
10 29698
11 65538
12 143362
13 311298
14 671746
15 1441794
16 3080194
17 6553602
18 13893634
19 29360130
20 61865986
21 130023426
22 272629762
23 570425346
24 1191182338
25 2483027970
26 5167382530
27 10737418242