# A148981 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 32
5 112
6 419
7 1556
8 5966
9 22800
10 88624
11 343953
12 1348203
13 5280871
14 20811229
15 81995438
16 324318955
17 1282789042
18 5086938010
19 20174850237
20 80153717254
21 318501840735
22 1267153768678
23 5042296615421
24 20081851469220
25 79994363147594
26 318851212604716
27 1271134164676675
28 5069865013260048