# A149404 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 52
5 177
6 807
7 3041
8 14268
9 56590
10 270028
11 1106952
12 5339922
13 22402560
14 108879743
15 464602037
16 2270119906
17 9813344344
18 48139440999
19 210239624137
20 1034441748942
21 4555286272410
22 22466061317387
23 99610665420191
24 492185173300521
25 2194832280561287
26 10861273254989284
27 48671943604817077