# A217778 (b-file synthesized from sequence entry)
0 1
1 3
2 10
3 34
4 117
5 407
6 1429
7 5055
8 17986
9 64278
10 230473
11 828391
12 2982825
13 10754459
14 38811802
15 140165322
16 506449789
17 1830590295
18 6618524221
19 23933966743
20 86562282258
21 313102489406
22 1132598701585
23 4097213146599
24 14822370816337
25 53623952036787