# A007136 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 1
5 1
6 3
7 5
8 14
9 27
10 65
11 142
12 338
13 773
14 1832
15 4296
16 10231
17 24296
18 58128
19 139132
20 334350
21 804441
22 1940239
23 4685806
24 11335797
25 27455949
26 66585170
27 161646826