# A137664 (b-file synthesized from sequence entry)
1 8
2 63
3 7775
4 2097151
5 743008370687
6 793714773254143
7 2185911559738696531967
8 5242879999999999999999999
9 55572324035428505185378394701823
10 6863037736488299999999999999999999999999999