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 A126691 #7 Dec 26 2024 20:30:54 %S A126691 3,11,17,29,41,47,53,59,71,83,89,97 %N A126691 Prime numbers p such that 100-p is also a prime. %C A126691 Suggested by the Goldbach Conjecture. %e A126691 3+97=100; 11+89=100; 17+83=100; 29+71=100; 41+59=100; 47+53=100 %t A126691 Select[Prime[Range[25]],PrimeQ[100-#]&] (* _James C. McMahon_, Dec 26 2024 *) %o A126691 (PARI) is(n)=isprime(n)&&isprime(100-n) \\ _Charles R Greathouse IV_, Sep 26 2013 %K A126691 easy,fini,full,nonn %O A126691 1,1 %A A126691 _Tomas Xordan_, Feb 14 2007