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 A306889 #17 May 07 2024 08:25:32 %S A306889 7,13,31,43,73,241,421,463,601,1093,1483,1723,2551,2971,3541,4423, %T A306889 8011,10303,17293,19183,20023,22621,23563,24181,27061,31153,35533, %U A306889 41413,42643,43891,46441,47743,53593,55933,60763,83233,84391,95791,98911,123553,143263,156421,164431 %N A306889 Brazilian primes that are also the greater of a pair of twin primes. %H A306889 R. J. Mathar, <a href="/A306889/b306889.txt">Table of n, a(n) for n = 1..417</a> %o A306889 (PARI) lista(lim)=my(v=List(), t, k); for(n=2, sqrt(lim), t=1+n; k=1; while((t+=n^k++)<=lim, if(isprime(t) && isprime(t-2), listput(v, t)))); v = vecsort(Vec(v), , 8); \\ _Michel Marcus_, Mar 15 2019 %Y A306889 Intersection of A006512 and A085104. %Y A306889 Cf. A306845, A306849. %K A306889 nonn,base %O A306889 1,1 %A A306889 _Michel Marcus_, Mar 15 2019