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%I #14 May 12 2018 11:44:57
%S 7,13,25,27,37,43,45,49,57,67,73,79,84,87,93,97,115,127,139,142,160,
%T 163,169,175,177,193,199,205,207,213,234,235,253,255,258,265,267,277,
%U 279,295,298
%N Numbers k such that A034693(k) = 4.
%H R. J. Mathar, <a href="/A034780/b034780.txt">Table of n, a(n) for n = 1..656</a>
%t Position[#, 4] &@ Table[k = 1; While[! PrimeQ[k n + 1], k++]; k, {n, 300}] // Flatten (* _Michael De Vlieger_, Mar 02 2017 *)
%Y Cf. A034693, A034694.
%K nonn
%O 1,1
%A _Labos Elemer_