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Numbers having no divisor d such that also d-x and d+x are divisors for some x.
4

%I #3 Mar 30 2012 18:50:43

%S 1,2,3,4,5,7,8,9,10,11,13,14,16,17,19,20,21,22,23,25,26,27,29,31,32,

%T 33,34,35,37,38,39,41,43,44,46,47,49,50,51,52,53,55,57,58,59,61,62,63,

%U 64,65,67,68,69,70,71,73,74,76,77,79,81,82,83,85,86,87,88,89,92,93,94

%N Numbers having no divisor d such that also d-x and d+x are divisors for some x.

%C A091009(a(n)) = 0; complement of A091011.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Dec 13 2003