# A148662 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 25
5 69
6 297
7 919
8 4209
9 14330
10 66413
11 237589
12 1127925
13 4224288
14 20166864
15 77647110
16 375206178
17 1483748803
18 7192465521
19 28949796874
20 141317035936
21 578798473432
22 2831000009495
23 11738326687294
24 57666232555593
25 242042851859253
26 1190667232643237
27 5042932509993216
28 24879899873021542