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A172057 Primes p such that either p-5/2 -+ 1/2 is prime. 0

%I #5 Apr 19 2023 08:04:05

%S 7,13,19,31,43,61,73,103,109,139,151,181,193,199,229,241,271,283,313,

%T 349,421,433,463,523,571,601,619,643,661,811,823,829,859,883,1021,

%U 1033,1051,1063,1093,1153,1231,1279,1291,1303,1321,1429,1453,1483,1489,1609

%N Primes p such that either p-5/2 -+ 1/2 is prime.

%C Greater of twin primes where twin primes of the form 6*k+1.

%F a(n) = A006512(n+1).

%Y Cf. A006512.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Jan 24 2010

%E Corrected (829 and 859 inserted) _R. J. Mathar_, May 02 2010

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)