# A018111 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 10
4 23
5 50
6 110
7 241
8 529
9 1158
10 2536
11 5555
12 12167
13 26644
14 58350
15 127784
16 279841
17 612834
18 1342070
19 2939051
20 6436343
21 14095196
22 30867616
23 67598188
24 148035889
25 324189522
26 709955183
27 1554758332