This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A205172 #13 Nov 25 2019 16:24:52 %S A205172 5,29,101,149,197,269,461,821,1061,1229,1277,1301,1877,1949,1997,2141, %T A205172 2237,2309,2381,2549,2789,3389,3461,3557,3581,3821,3917,4157,4229, %U A205172 4421,4517,4637,5021,5477,5501,5741,6197,6269,6701,6869,7349,7589,7757,7877 %N A205172 Primes p == 5 (mod 8) such that p + 2 is also prime. %C A205172 The lesser of twin primes == 5 (mod 8). %H A205172 Robert Israel, <a href="/A205172/b205172.txt">Table of n, a(n) for n = 1..10000</a> %p A205172 select(t -> isprime(t) and isprime(t+2), [seq(i,i=5..10000,8)]);# _Robert Israel_, Nov 25 2019 %t A205172 Select[ Prime@ Range@ 1000, Mod[#, 8] == 5 && PrimeQ[# + 2] &] %o A205172 (PARI) forprime(p=1, 7900, if(Mod(p, 8)==5 && ispseudoprime(p+2), print1(p, ", "))) \\ _Felix Fröhlich_, Nov 25 2019 %Y A205172 Cf. A071695, A205171. %K A205172 easy,nonn %O A205172 1,1 %A A205172 _Robert G. Wilson v_, Jan 22 2012