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%I #18 Mar 26 2024 08:08:23
%S 31,41,61,181,241,421,541,601,1021,1321,1381,1741,1801,2281,2341,2521,
%T 3121,3181,3541,4021,4201,4441,4621,4801,5101,5581,5641,5701,5881,
%U 6421,6481,6781,6841,7621,7741,8101,8221,8581,8641,8821,9421,9721,9781,10141,10321
%N Primes p such that (p-11)/10 is also a prime.
%H Daniel Starodubtsev, <a href="/A089442/b089442.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = prime(A143365(n)). - _R. J. Mathar_, Mar 26 2024
%F a(n) = 10*A155978(n)+11. - _R. J. Mathar_, Mar 26 2024
%o (PARI) diff2p(n,a,b) = { forprime(x=3,n, y=(x-a)/b; if(y==floor(y), if(isprime(y), print1(x,",")) ) ) };
%o diff2p(10500,11,10) \\ corrected by _Hugo Pfoertner_, Jan 20 2020
%o (Magma) [p:p in PrimesUpTo(10500)| IsIntegral((p-11)/10) and IsPrime((p-11) div 10)]; // _Marius A. Burtea_, Jan 20 2020
%Y Cf. A143365, A155978.
%K easy,nonn
%O 1,1
%A _Cino Hilliard_, Dec 28 2003
%E All terms corrected by _Juri-Stepan Gerasimov_, Jul 01 2010
%E Corrections confirmed by _N. J. A. Sloane_, Jul 04 2010