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Numbers with nonzero multiplicative digital root 1.
2

%I #6 Feb 13 2017 21:06:11

%S 0,1,10,11,25,52,55,100,101,110,111,125,152,155,205,215,250,251,455,

%T 502,505,512,515,520,521,545,550,551,554,555,888,1000,1001,1010,1011,

%U 1025,1052,1055,1100,1101,1110,1111,1125,1152

%N Numbers with nonzero multiplicative digital root 1.

%H <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>.

%F A051802^-1(1)

%Y Part of histogram of A051802.

%K nonn,easy,base

%O 1,3

%A _Dan Hoey_, Dec 09 1999