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 A246412 #6 Aug 29 2014 19:13:22 %S A246412 44,88,132,199,243,287,331,377,421,465,509,532,576,620,664,710,754, %T A246412 798,842,909,953,997,1041,1087,1131,1175,1219,1242,1286,1330,1374, %U A246412 1420,1464,1508,1552,1619,1663,1707,1751,1797,1841,1885,1929,1952,1996,2040,2084 %N A246412 Positive integers k satisfying csc(k) > csc(k+1) > csc(k+2) < csc(k+3). %C A246412 A246410, A246411, and a(n) partition the positive integers. %H A246412 Clark Kimberling, <a href="/A246412/b246412.txt">Table of n, a(n) for n = 1..1000</a> %t A246412 z = 200; f[x_] := f[x] = Csc[x]; %t A246412 Select[Range[1, z], f[#] < f[# + 1] &] (*A246410*) %t A246412 Select[Range[1, z], f[#] > f[# + 1] < f[# + 2] &] (*A246411*) %t A246412 Select[Range[1, 10 z], f[#] > f[# + 1] > f[# + 2] < f[# + 3] &] (*A246412*) %Y A246412 Cf. A246410, A246411. %K A246412 nonn,easy %O A246412 1,1 %A A246412 _Clark Kimberling_, Aug 25 2014