# A126883 (b-file synthesized from sequence entry)
0 0
1 1
2 7
3 63
4 1023
5 32767
6 2097151
7 268435455
8 68719476735
9 35184372088831
10 36028797018963967
11 7378697629483820643
12 302231454903657293676543
13 2475880078570760549798248447