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 A354808 #4 Jun 08 2022 15:49:00 %S A354808 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,25,26,27, %T A354808 28,29,31,33,34,35,37,38,39,41,43,44,45,46,47,49,50,51,52,53,55,57,58, %U A354808 59,61,62,63,65,66,67,68,69,70,71,73,74,75,76,77,78,79,81,82,83,85,86,87,89,91,92,93,94,95,97,98,99,101 %N A354808 Positions of negative terms in A346241. %o A354808 (PARI) isA354808(n) = A354807(n); %Y A354808 Cf. A003415, A346241, A354807 (characteristic function), A354809 (complement). %K A354808 nonn %O A354808 1,1 %A A354808 _Antti Karttunen_, Jun 08 2022