# A148151 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 11
5 30
6 93
7 294
8 969
9 3282
10 11329
11 39882
12 142295
13 513939
14 1875643
15 6902317
16 25594800
17 95509369
18 358392077
19 1351474090
20 5118071489
21 19456766201
22 74217281735
23 283958971978
24 1089413455030
25 4189811381010
26 16149646794893
27 62374670683636
28 241352432276001
29 935460060376366
30 3631340391953329