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A086220 Numbers n such that p=n^2+2, p+2, p+6 and p+8 are four consecutive primes. 3

%I #7 Jan 06 2020 12:21:54

%S 3,57,32397,54813,61827,62493,98487,98853,119937,213237,254577,306123,

%T 322263,328803,438453,603603,619263,656733,671013,675807,821247,

%U 875277,1051173,1121133,1163697,1230783,1234317,1337763,1382223,1388103,1455927,1538517,1581237

%N Numbers n such that p=n^2+2, p+2, p+6 and p+8 are four consecutive primes.

%H Andrew Howroyd, <a href="/A086220/b086220.txt">Table of n, a(n) for n = 1..1000</a>

%o (PARI) is(n)={my(p=n^2+2); isprime(p) && isprime(p+2) && isprime(p+6) && isprime(p+8)} \\ _Andrew Howroyd_, Jan 05 2020

%Y Cf. A086380, A086381, A086509.

%K easy,nonn

%O 1,1

%A _Zak Seidov_, Sep 08 2003

%E Terms a(15) and beyond from _Andrew Howroyd_, Jan 05 2020

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)