A181409 - OEIS

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A181409

For the numbers n in A181408, these are the largest corresponding k such that 2^n-2^k-1 and 2^n-2^k+1 are twin primes.

%I #8 Mar 31 2012 13:22:06

%S 2,2,6,10,18,18,41,42,74,84,64,125,109,169,108,242,142,234,288,254,

%T 380,379,281,274,326,376,625,677,1122,1400,1417,1934,1620,2254,3584,

%U 3674,3019,3548,6128,6074

%N For the numbers n in A181408, these are the largest corresponding k such that 2^n-2^k-1 and 2^n-2^k+1 are twin primes.

%K nonn

%O 1,1

%A _Pierre CAMI_, Jan 28 2011