# A126017 (b-file synthesized from sequence entry)
1 2
2 5
3 11
4 23
5 47
6 971
7 191
8 383
9 22136835839
10 1310719
11 2259801991
12 6143
13 353563778431304822783
14 91424858111
15 5425784582791
16 57395627
17 21474836479
18 1099999999999999999
19 786431
20 13508517176729920889