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 A352723 #9 Mar 31 2022 16:59:19 %S A352723 2,2,2,2,5,5,13,11,2,2,2,17,17,17,17,19,2,2,2,2,2,2,2,2,3,29,5,37,37, %T A352723 41,41,43,37,53,53,61,59,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,17,17,17,17,5, %U A352723 5,5,5,73,73,71,83,89,89,73,73,67,97,97,101,101,109 %N A352723 a(n) = A352722(n) AND A352722(n+1) (where AND denotes the bitwise AND operator). %C A352723 All terms are prime. %H A352723 Rémy Sigrist, <a href="/A352723/b352723.txt">Table of n, a(n) for n = 1..10000</a> %e A352723 a(5) = A352722(5) AND A352722(6) = 7 AND 5 = 5. %o A352723 (PARI) s=0; v=2; for (n=1, 74, s+=2^v; for (w=1, oo, if (!bittest(s, w) && isprime(p=bitand(v, w)), v=w; print1(p", "); break))) %Y A352723 Cf. A308340, A337013, A352722. %K A352723 nonn,base %O A352723 1,1 %A A352723 _Rémy Sigrist_, Mar 30 2022