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 A346256 #6 Jul 19 2021 18:31:58 %S A346256 4,8,9,16,20,25,27,32,40,45,49,56,63,64,68,75,80,81,99,116,117,121, %T A346256 124,125,128,135,136,147,152,164,169,171,175,184,189,192,200,208,225, %U A346256 232,236,243,244,248,256,272,279,280,284,289,292,296,304,315,325,328,333,340,343,344,351,356,361,363,368,369,387,400 %N A346256 Positions of zeros in A346254. %H A346256 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a> %H A346256 <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a> %o A346256 (PARI) isA346256(n) = (0==A346254(n)); %Y A346256 Cf. A346254. %Y A346256 Cf. also A346251. %K A346256 nonn %O A346256 1,1 %A A346256 _Antti Karttunen_, Jul 19 2021