# A006172 (b-file synthesized from sequence entry)
0 4
1 2
2 9
3 10
4 42
5 79
6 252
7 582
8 1645
9 4106
10 11070
11 28459
12 75348
13 195898
14 515073
15 1344906
16 3526786
17 9223895
18 24163596
19 63236638
20 165595269
21 433469962
22 1134942774
23 2971150995
24 7778845732
25 20364843314
26 53316562617
27 139583423242
28 365436006810
29 956720876191
30 2504732642460