%I #13 Jan 19 2021 09:12:02
%S 5,19,83,89,151,167,107,71,233,163,173,359,523,317,751,569,613,587,
%T 941,823,2293,1741,1873,3541,3907,2179,7817,3907,2683,3433,6277,6577,
%U 4787,8807,9661,20051,9403,10267,23909,16927,8779,14437,14887,31231,18191,13883,14281,37987,38839,14629,22159
%N Prime values in A067439, in the order in which they appear.
%C 3907 occurs twice, as a(25) and a(28). Are there any others?
%H Robert Israel, <a href="/A340736/b340736.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = A067439(A340731(n)).
%e a(3) = 83 because 83 = A067439(25) is the third prime value to occur in A067439.
%p f:= proc(n) local t, k;
%p t:= add(`if`(igcd(n, k)=1, n mod k, 0), k=2..n-1);
%p if isprime(t) then t fi
%p end proc:
%p map(f, [$1..1000]);
%Y Cf. A067439, A340731.
%K nonn
%O 1,1
%A _J. M. Bergot_ and _Robert Israel_, Jan 18 2021