%I A016043
%S A016043 1,3,5,15,17,255,257,65355,65357,4294967295,4294967297,
%T A016043 18446744073709551615,18446744073709551617,
%U A016043 340282366920938463463374607431768211455
%N A016043 2^(2^n) +- 1 without repeats.
%Y A016043 Sequence in context: A053576 A077406 A054432 this_sequence A077403 A018374 
               A002962
%Y A016043 Adjacent sequences: A016040 A016041 A016042 this_sequence A016044 A016045 
               A016046
%K A016043 nonn
%O A016043 1,2
%A A016043 Robert G. Wilson v (rgwv(AT)rgwv.com)