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A175606 Primes p of the form 4*k+3 such that p+2 is prime and p-1 is nonsquarefree. 1

%I

%S 1151,1451,1667,3251,3851,4019,5651,6359,6551,6959,7547,11351,11831,

%T 12251,13691,15731,15887,16451,17987,18131,18251,19751,20231,22091,

%U 26951,27539,28751,30851,31151,32831,35051,37571,38651,38711,40151,43319,44279,44771,45179

%N Primes p of the form 4*k+3 such that p+2 is prime and p-1 is nonsquarefree.

%H Amiram Eldar, <a href="/A175606/b175606.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[3,99299,4],!SquareFreeQ[ #-1]&&PrimeQ[ # ]&&PrimeQ[ #+2]&]

%Y Subsequence of A071698.

%Y Cf. A089188.

%K nonn

%O 1,1

%A _Zak Seidov_, Jul 22 2010

%E Name corrected by _Amiram Eldar_, Apr 23 2022

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Last modified September 25 22:56 EDT 2022. Contains 356986 sequences. (Running on oeis4.)