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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.

A180532 Primes that become a different prime under the mapping 1 <=> 9.

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%I A180532 #11 Oct 29 2023 16:10:36
%S A180532 17,71,79,97,107,137,149,167,179,191,199,317,397,401,409,419,431,439,
%T A180532 491,619,691,701,709,761,769,821,829,907,911,919,937,941,967,971,1009,
%U A180532 1019,1021,1049,1051,1093,1109,1123,1201,1213,1229,1231,1249,1277,1283
%N A180532 Primes that become a different prime under the mapping 1 <=> 9.
%H A180532 Robert Price, <a href="/A180532/b180532.txt">Table of n, a(n) for n = 1..3376</a>
%H A180532 <a href="/index/Pri#primes">Index to Primes</a>, Primes that become a different prime under some mapping.
%t A180532 fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 1] || MemberQ[id, 9]) && PrimeQ[ FromDigits[ id /. {1 -> 9, 9 -> 1}] ]]; Select[ Prime@ Range@ 210, fQ]
%Y A180532 Cf. A171050, A175791, A180517 thru A180559, A175789, A180560, A180561.
%K A180532 base,nonn
%O A180532 1,1
%A A180532 _Zak Seidov_ and _Robert G. Wilson v_, Sep 09 2010