# A148858 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 28
5 96
6 349
7 1266
8 4872
9 18937
10 74824
11 300666
12 1221397
13 5003868
14 20748125
15 86640057
16 363955361
17 1541316904
18 6561178732
19 28057372888
20 120671313034
21 521071872996
22 2258015020869
23 9827393809110
24 42906980263767
25 187868103415443
26 825367631777135
27 3635500398284390
28 16050904740944003