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%I #6 May 16 2018 20:07:33
%S 1,4,8,11,14,18,25,28,32,35,39,42,45,49,52,55,59,66,69,73,76,80,91,94,
%T 115,118,122,125,128,132,139,142,146,149,152,156,160,163,167,170,173,
%U 177,196,199,203,206,209,213,220,223,227,230,234,237,240,244,247,250,254,261,264,268,271,275,278,281,285,288,291,295,309,312,316,319,322,326,338
%N Positions of odd terms in A304531.
%C After A304531(2) = 2, the positions of other primes in A304531 are: 4, 11, 42, 237, 1798, 7192, 69611, 431203, 2401568, ...
%H Antti Karttunen, <a href="/A304530/b304530.txt">Table of n, a(n) for n = 1..50000</a>
%o (PARI) for(n=1,oo,if(A304531(n)%2, print1(n,", ")))
%Y Cf. A304531.
%Y Differs from A303750 for the first time at n=18, where a(18) = 66, while A303750(18) = 71.
%K nonn
%O 1,2
%A _Antti Karttunen_, May 14 2018
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