# A149798 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 19
4 87
5 361
6 1725
7 7687
8 37101
9 170795
10 834677
11 3932441
12 19303463
13 92161037
14 454658169
15 2193047187
16 10845000033
17 52668165919
18 261103799245
19 1275006361955
20 6329800166463
21 31031356285737
22 154272833422475
23 758780915471777
24 3775619464304719
25 18616082621972999
26 92711332843558493