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A026313 Numbers n such that |sin(n)*sin(n+2)| < (sin(n+1))^2. 1

%I

%S 0,1,3,4,6,7,10,13,14,16,17,19,20,22,23,25,26,28,29,32,35,36,38,39,41,

%T 42,44,45,47,48,50,51,54,57,58,60,61,63,64,66,67,69,70,72,73,76,79,80,

%U 82,83,85,86,88,89,91,92,94,95,98,101,102,104,105,107,108,110,111,113,114

%N Numbers n such that |sin(n)*sin(n+2)| < (sin(n+1))^2.

%t Select[Range[120], Abs[Sin[ # ]*Sin[ # + 2]] < Sin[ # + 1]^2 &] (* _Stefan Steinerberger_, Apr 12 2006 *)

%Y Cf. A117672.

%K nonn

%O 1,3

%A _Clark Kimberling_

%E More terms from _Stefan Steinerberger_, Apr 12 2006

%E Missing a(1)=0 inserted by _Sean A. Irvine_, Sep 25 2019

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Last modified June 20 17:12 EDT 2021. Contains 345178 sequences. (Running on oeis4.)