# A149547 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 13
4 55
5 183
6 819
7 2879
8 13213
9 49231
10 226629
11 876199
12 4067573
13 16096651
14 75181093
15 303273801
16 1421299301
17 5822068963
18 27370535379
19 113468717975
20 534935197769
21 2239853274431
22 10582195871479
23 44689058243777
24 211516425857617
25 899732843252239
26 4265497711986437
27 18257957134293345