# A102239 (b-file synthesized from sequence entry)
0 1
1 7
2 31
3 157
4 781
5 3907
6 19531
7 97657
8 488281
9 2441407
10 12207031
11 61035157
12 305175781
13 1525878907
14 7629394531
15 38146972657
16 190734863281
17 953674316407
18 4768371582031
19 23841857910157
20 119209289550781
21 596046447753907