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A090607 Primes of the form 6*p - 5 such that p and 6*p - 1 are primes. 5

%I #14 Aug 04 2021 03:15:33

%S 7,13,37,97,109,277,313,349,397,613,673,757,937,1429,1609,1693,1873,

%T 2269,2293,2377,2689,2797,3457,3673,3697,3877,4933,4969,5437,5569,

%U 5857,6577,6733,7669,8233,8677,8929,9133,10177,10333,10729,11257,11593,12097

%N Primes of the form 6*p - 5 such that p and 6*p - 1 are primes.

%F a(n) = 6*A089144(n) - 5.

%o (PARI) lista(nn) = forprime(p=2, nn, if(isprime(6*p-1)&&isprime(6*p-5), print1(6*p-5, ", "))); \\ _Jinyuan Wang_, Aug 04 2021

%Y Cf. A089144, A090606, A090608, A090609, A090610.

%K nonn,easy

%O 1,1

%A _Ray Chandler_, Dec 06 2003

%E Name clarified by _Jinyuan Wang_, Aug 03 2021

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Last modified September 15 17:47 EDT 2024. Contains 375954 sequences. (Running on oeis4.)