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 A246303 #6 Aug 23 2014 08:51:31 %S A246303 3,4,5,9,10,11,12,16,17,18,22,23,24,28,29,30,35,36,37,41,42,43,47,48, %T A246303 49,53,54,55,56,60,61,62,66,67,68,72,73,74,79,80,81,85,86,87,91,92,93, %U A246303 97,98,99,100,104,105,106,110,111,112,116,117,118,123,124 %N A246303 Numbers k such that cos(k) < cos(k+1). %C A246303 The sequences A246303, A246304, A246305, A246306 partition the nonnegative integers. %H A246303 Clark Kimberling, <a href="/A246303/b246303.txt">Table of n, a(n) for n = 1..4000</a> %t A246303 z = 500; f[x_] := f[x] = Cos[x]; t = Range[0, z]; %t A246303 Select[t, f[#] < f[# + 1] &] (* A246303 *) %t A246303 Select[t, f[#] > f[# + 1] < f[# + 2] &] (* A246304 *) %t A246303 Select[t, f[#] > f[# + 1] > f[# + 2] < f[# + 3] &] (* A246305 *) %t A246303 Select[t, f[#] > f[# + 1] > f[# + 2] > f[# + 3] < f[# + 4] &] (* A246306 *) %Y A246303 Cf. A026304, A246305, A246306, A026311 (complement of A246303). %K A246303 nonn,easy %O A246303 1,1 %A A246303 _Clark Kimberling_, Aug 22 2014