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 A026319 #9 Feb 04 2025 09:20:33 %S A026319 7,10,13,16,29,32,35,38,51,54,57,60,73,76,79,82,95,98,101,104,117,120, %T A026319 123,126,139,142,145,148,161,164,167,170,186,189,192,208,211,214,230, %U A026319 233,236,252,255,258,274,277,280,296,299,302 %N A026319 a(n) is the n-th nonnegative integer k satisfying |sin(k)| < |cos(k)| < |sin(k+1)|. %t A026319 Select[Range[0,310],Abs[Sin[#]]<Abs[Cos[#]]<Abs[Sin[#+1]] &] (* _Stefano Spezia_, Feb 04 2025 *) %Y A026319 Cf. A026317, A246303, A327138, A327139. %K A026319 nonn %O A026319 1,1 %A A026319 _Clark Kimberling_