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%I #4 Mar 31 2012 13:22:04
%S 168,1242,3042,492,30012,171480,2299722,5052450
%N k sequence associated with A112550.
%e 168*41^2-1=282407, 282407 and 282409 are twin primes so k(2)=168
%Y See prime sequence in A112550
%K nonn
%O 2,1
%A _Pierre CAMI_, Sep 13 2005