# A148187 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 12
5 30
6 93
7 267
8 883
9 2804
10 9586
11 32445
12 114178
13 404537
14 1462307
15 5349537
16 19800648
17 74146404
18 280190689
19 1068734524
20 4110516365
21 15922071713
22 62145913561
23 243952955828
24 964002185825
25 3828747254167
26 15290516388596
27 61355753916594
28 247316160801343
29 1001327469687834
30 4069825140933222