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A204231 Position of primes in A127345. 3

%I

%S 1,2,3,4,7,10,12,13,14,19,23,27,33,37,41,42,44,49,59,61,69,72,76,83,

%T 88,89,111,121,126,127,134,137,143,144,146,149,159,163,170,177,178,

%U 186,189,195,197,198,204,208,214,217,220,224,228,233,234,236,243,247,248,249,276,278,288,294,295,335,338,353,354,380,382,384,395,401,402,408,411,427

%N Position of primes in A127345.

%H Zak Seidov, <a href="/A204231/b204231.txt">Table of n, a(n) for n = 1..1000</a>

%F A127346(n) = A127345(a(n)).

%o (PARI) p=2; q=3; n=0; forprime(r=5, 1e3, n++; if(isprime(p*q+p*r+q*r), print1(n", ")); p=q; q=r) \\ _Charles R Greathouse IV_, Jan 13 2012

%Y Cf. A127345, A127346.

%K nonn

%O 1,2

%A _Zak Seidov_, Jan 13 2012

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Last modified October 20 03:04 EDT 2021. Contains 348099 sequences. (Running on oeis4.)