A098022 - OEIS

%I #6 Mar 30 2012 17:34:14

%S 5,10,17,22,29,34,41,46,51,58,63,70,75,82,87,94,99,104,111,116,123,

%T 128,135,140,147,152,157,164,169,176,181,188,193,200,205,210,217,222,

%U 229,234,241,246,253,258,263,270,275,282,287,294,299,306,311,316,323,328

%N Irrational rotation of Log(3)/Log(2) as an implicit sequence with an uneven Cantor cartoon.

%F f(n)=n*(Log[3]/Log[2]) (mod 1), g(x)=-1 if 0<=x<=1/3, g(x)=0 if 1/3<x<=2/3 & g(x)=1 if 1/3<x<=1, a(n)=n If f[n+2]-2*f[n+1]+f[n]-g[f[n+1]]=0.

%t f[n_] := Mod[n*(Log[3]/Log[2]), 1]; g[x_] := -1/; 0<=x<=1/3; g[x_] := 0/; 1/3<x<=2/3; g[x_] := 1/; 1/3<x<=1; a = Delete[ Union[ Table[ If [Simplify[f[n+2] - 2*f[n+1] + f[n]]-g[f[n+1]]==0, n, 0], {n, 330}]], 1]; ListPlot[a, PlotJoined-> True]

%K nonn

%O 1,1

%A _Roger L. Bagula_, Sep 09 2004

%E Edited and extended by _Robert G. Wilson v_, Sep 25 2004