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%I #16 Sep 08 2022 08:46:17
%S 1,2,5,6,10,11,60,75,1404,1974,16389,37105
%N a(n) is the least positive k such that A276495(n) + 2^k is prime.
%C If A276495(13) = 453143, then a(13) > 10^5.
%o (Magma) lst:=[]; c:=0; for n in [1..31951 by 2] do m:=-1; repeat m+:=1; a:=n-2^m; until a lt 1 or IsPrime(a); if a lt 1 then k:=0; repeat k+:=1; b:=n+2^k; until IsPrime(b); if k gt c then Append(~lst, k); c:=k; end if; end if; end for; lst;
%Y Cf. A067760, A276495.
%K nonn,hard,more
%O 1,2
%A _Arkadiusz Wesolowski_, Sep 05 2016
%E Typo in name corrected by _Rémy Sigrist_, Sep 12 2016
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