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 A332952 #11 Mar 09 2020 22:10:19 %S A332952 46,58,74,94,106,118,122,134,142,158,166,194,202,206,214,262,267,274, %T A332952 278,298,309,314,326,334,339,346,358,362 %N A332952 Squarefree semiprimes which never occur in A245486. %C A332952 Also squarefree semiprimes which never occur in A332951. %C A332952 This sequence is infinite. It appears that all terms can be divisible by 2 or 3. %C A332952 If A014664(i) = A014664(j) for some 1 < i < j, then 2*prime(i) is a term. See A245486 for more information. %H A332952 Romanian Master in Mathematics Contest, Bucharest, 2020, <a href="https://artofproblemsolving.com/community/c6h2019180">Problem 6</a> %e A332952 a(2) = 58 because when 2^m - 1 or 2^m + 1 is divisible by 29, it's also divisible by 113. Therefore, there's no integer k such that A245486(k) = A006530(k) * A006530(k+1) = 58. %Y A332952 Cf. A000040, A006530, A006881, A014664, A245486, A332951. %K A332952 nonn,more %O A332952 1,1 %A A332952 _Jinyuan Wang_, Mar 04 2020