# A061815 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 14
5 42
6 133
7 433
8 1455
9 4958
10 17247
11 60502
12 215353
13 770865
14 2789365
15 10134529
16 37130526
17 136451349
18 504837219
19 1872121732
20 6980767968
21 26078614284
22 97872756530
23 367861581953
24 1388061197005
25 5243972732886