cp's OEIS Frontend

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.

A082435 Palindromic primes with middle digit 0.

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%I A082435 #15 Sep 08 2022 08:45:10
%S A082435 101,16061,31013,35053,38083,73037,74047,91019,94049,1120211,1150511,
%T A082435 1160611,1180811,1190911,1250521,1280821,1300031,1360631,1390931,
%U A082435 1490941,1520251,1550551,1580851,1600061,1630361,1640461,1660661
%N A082435 Palindromic primes with middle digit 0.
%H A082435 Jeppe Stig Nielsen, <a href="/A082435/b082435.txt">Table of n, a(n) for n = 1..10000</a>
%o A082435 (Magma) [ p: p in PrimesUpTo(200000000) | IsOdd(d) and D[(d+1) div 2] eq 0 and D eq Reverse(D) where d is #D where D is Intseq(p) ]; // _Vincenzo Librandi_, Apr 12 2011
%o A082435 (PARI) for(m=2,5,forstep(j=10^(m-1),10^m-1,10,d=digits(j);p=fromdigits(vector(2*m-1,x,if(x<m,d[x],d[2*m-x])));isprime(p)&&print1(p,", "))) \\ _Jeppe Stig Nielsen_, Feb 20 2021
%Y A082435 Cf. A002385.
%K A082435 nonn,base
%O A082435 1,1
%A A082435 _Lekraj Beedassy_, Apr 25 2003