# A049164 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 23
10 135
11 599
12 2187
13 6947
14 19899
15 52667
16 131109
17 311525
18 717525
19 1635781
20 3802461
21 9332573
22 24773869
23 70874381
24 212534247
25 646664443
26 1949536667
27 5749101579
28 16503012263
29 46118290863