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Indices of primes in A006128.
2

%I #8 Nov 19 2017 17:21:12

%S 2,30,49,54,56,85,91,104,135,175,195,203,266,303,343,409,421,427,445,

%T 448,523,538,607,622,780,1006,1109,1186,1338,1341,1453,1591,1629,1707,

%U 1826,1852,1884,1949,2033,2039,2056,2154,2408,2444,2495,2559,3134,3227,3240

%N Indices of primes in A006128.

%H Vaclav Kotesovec, <a href="/A285220/b285220.txt">Table of n, a(n) for n = 1..257</a>

%e 30 is in the sequence because A006128(30) = 54563 is prime.

%Y Cf. A006128, A046063.

%K nonn

%O 1,1

%A _Vaclav Kotesovec_, Apr 14 2017