%I #6 Mar 20 2013 11:46:45

%S 1,3,5,15,17,255,257,65535,65537,4294967295,4294967297,

%T 18446744073709551615,18446744073709551617,

%U 340282366920938463463374607431768211455,340282366920938463463374607431768211457

%N 2^(2^n) +- 1 without repeats.

%t Union[Flatten[#+{1,-1}&/@(2^(2^Range[0,10]))]] (* _Harvey P. Dale_, Mar 20 2013 *)

%K nonn

%O 1,2

%A _Robert G. Wilson v_

%E Corrected and extended by _Harvey P. Dale_, Mar 20 2013