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 A180536 #11 Oct 30 2023 11:13:56
%S A180536 127,167,241,277,283,421,461,523,563,641,677,683,823,863,1021,1061,
%T A180536 1123,1163,1201,1213,1223,1229,1237,1297,1321,1327,1361,1367,1601,
%U A180536 1613,1637,1663,1669,1697,2011,2027,2053,2069,2089,2113,2131,2143,2161,2207,2221
%N A180536 Primes that become a different prime under the mapping 2 <=> 6.
%H A180536 Robert Price, <a href="/A180536/b180536.txt">Table of n, a(n) for n = 1..2388</a>
%H A180536 <a href="/index/Pri#primes">Index to Primes</a>, Primes that become a different prime under some mapping.
%t A180536 fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 2] || MemberQ[id, 6]) && PrimeQ[ FromDigits[ id /. {2 -> 6, 6 -> 2}] ]]; Select[ Prime@ Range@ 350, fQ]
%Y A180536 Cf. A171030, A175791, A180517 thru A180559, A175789, A180560, A180561.
%K A180536 base,nonn
%O A180536 1,1
%A A180536 _Zak Seidov_ and _Robert G. Wilson v_, Sep 09 2010