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%I #18 Dec 05 2022 08:35:28
%S 2,3,4,5,6,8,10,11,12,16,20,21,22,23,24,25,30,32,38,39,40,41,42,43,44,
%T 45,46,47,48,52,54,56,58,60,61,62,64,66,68,71,72,73,77,78,79,80,82,83,
%U 85,87,88,90,91,92,93,94,96,101,106,108,109,111,114,115,118,120,122,123
%N Strictly increasing domain of A005185.
%t digits=750;
%t Hofstadter[n_Integer?Positive] := Hofstadter[n] = Hofstadter[n - Hofstadter[n-1]] + Hofstadter[n - Hofstadter[n-2]];
%t Hofstadter[1] = Hofstadter[2] = 1;
%t a1=Table[Hofstadter[n], {n, digits}];
%t f[x_, y_] := x-y/; x-y>0;
%t f[x_, y_] := 0/; x-y<=0;
%t b=Table[If[f[a1[[n]], a1[[n-1]]]>0, a1[[n]], 0], {n, 2, digits}];
%t c=Delete[Union[b], 1]
%Y Cf. A005185, A087722, A087723.
%K nonn
%O 1,1
%A _Roger L. Bagula_, Sep 29 2003
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