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Trans-Harshad numerals: base-10 numerals that represent positive Harshad numbers in every base in which they occur.
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%I #3 Mar 30 2012 17:27:18

%S 1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,110,200,220,300,330,

%T 400,440,500,550,600,660,700,770,800,880,900,990,1000,1010,1020,1050,

%U 1100,1320,2000,2010,2020,2040,2200,2310,2640,3000,3030,3060,3300,3960

%N Trans-Harshad numerals: base-10 numerals that represent positive Harshad numbers in every base in which they occur.

%C Harshad, or Niven, numbers are those that are divisible by the sum of their digits; see A005349 for base-10 Harshad numbers.

%K base,nonn

%O 1,2

%A _Matthew Vandermast_, Mar 21 2003