# A148451 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 17
5 51
6 171
7 589
8 2049
9 7409
10 27508
11 103052
12 392031
13 1517989
14 5935172
15 23393990
16 93204843
17 374588839
18 1514534730
19 6164304590
20 25261163401
21 104062614425
22 430672375871
23 1791323699173
24 7484537175001
25 31389035415355
26 132129910409698
27 558261805574402
28 2366357769309447