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 A354809 #4 Jun 08 2022 15:49:04 %S A354809 1,24,30,32,36,40,42,48,54,56,60,64,72,80,84,88,90,96,100,104,108,112, %T A354809 120,126,128,132,135,136,140,144,150,152,156,160,162,168,176,180,184, %U A354809 192,196,198,200,204,208,210,216,220,224,225,228,232,234,240,248,250,252,256,260,264,270,272,276,280,294,296,300 %N A354809 Positions of nonnegative terms in A346241. %o A354809 (PARI) isA354809(n) = !A354807(n); %Y A354809 Positions of 0's in A354807. %Y A354809 Cf. A003415, A346241, A354808 (complement). %K A354809 nonn %O A354809 1,2 %A A354809 _Antti Karttunen_, Jun 08 2022