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 A338175 #8 Oct 15 2020 16:37:08 %S A338175 2,3,7,17,23,47,53,157,173,193,233,347,353,373,383,443,457,577,823, %T A338175 857,907,1117,1153,1193,1223,1277,1447,1453,1523,1697,1733,1823,1873, %U A338175 2027,2153,2203,2293,2333,2357,2467,2557,2657,2683,2707,2777,2797,2803,2903,3217,3253,3323,3407,3433,3643,3673 %N A338175 Primes p such that (p^2+6)/5 is prime. %C A338175 All terms end in 2, 3 or 7. %H A338175 Robert Israel, <a href="/A338175/b338175.txt">Table of n, a(n) for n = 1..10000</a> %e A338175 a(3)=7 is a member because 7 is prime and (7^2+6)/5 = 11 is prime. %p A338175 select(p -> isprime(p) and isprime((p^2+6)/5), [2,seq(seq(10*i+j,j=[3,7]),i=0..1000)]); %Y A338175 Cf. A154418. %K A338175 nonn %O A338175 1,1 %A A338175 _J. M. Bergot_ and _Robert Israel_, Oct 14 2020