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 A180530 #11 Oct 29 2023 16:10:07
%S A180530 13,17,19,31,37,41,47,61,67,71,73,79,107,109,113,139,151,157,167,179,
%T A180530 181,191,211,251,257,277,313,331,337,373,419,461,467,479,541,547,601,
%U A180530 607,613,641,647,673,701,709,719,739,751,757,761,773,787,797,811,821
%N A180530 Primes that become a different prime under the mapping 1 <=> 7.
%H A180530 Robert Price, <a href="/A180530/b180530.txt">Table of n, a(n) for n = 1..5649</a>
%H A180530 <a href="/index/Pri#primes">Index to Primes</a>, Primes that become a different prime under some mapping.
%t A180530 fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 1] || MemberQ[id, 7]) && PrimeQ[ FromDigits[ id /. {1 -> 7, 7 -> 1}] ]]; Select[ Prime@ Range@ 150, fQ]
%Y A180530 Cf. A171035, A175791, A180517 thru A180559, A175789, A180560, A180561.
%K A180530 base,nonn
%O A180530 1,1
%A A180530 _Zak Seidov_ and _Robert G. Wilson v_, Sep 09 2010