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A180409 Unique digits used in n in numerical order (with 0 last) 1

%I

%S 1,2,3,4,5,6,7,8,9,10,1,12,13,14,15,16,17,18,19,20,12,2,23,24,25,26,

%T 27,28,29,30,13,23,3,34,35,36,37,38,39,40,14,24,34,4,45,46,47,48,49,

%U 50,15,25,35,45,5,56,57,58,59,60,16,26,36,46,56,6

%N Unique digits used in n in numerical order (with 0 last)

%F a(n) = 1234567890 after any digits not appearing in n are removed

%e a(93077) = 3790. Seven is only used once and the digits are sorted with zero last

%t udno[n_]:=Module[{c=Union[IntegerDigits[n]]},FromDigits[If[First[c] == 0, RotateLeft[ c],c]]]; Array[udno,70] (* _Harvey P. Dale_, Dec 23 2015 *)

%K easy,nonn,base

%O 1,2

%A _Dominick Cancilla_, Sep 02 2010

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Last modified June 13 18:45 EDT 2021. Contains 345008 sequences. (Running on oeis4.)