A218019 - OEIS

%I #20 Feb 11 2020 10:08:01

%S 1023456,1023457,1023458,1023459,1023465,1023467,1023468,1023469,

%T 1023475,1023476,1023478,1023479,1023485,1023486,1023487,1023489,

%U 1023495,1023496,1023497,1023498,1023546,1023547,1023548,1023549,1023564,1023567,1023568,1023569

%N Integers in which the number of distinct base-10 digits is 7.

%C This is to A031969 as 7 is to 4. This is the 7th row of the array A(k,n) = n-th number in which the number of distinct base-10 digits is k. A031969 is the 4th row. A220063 is the 5th row. A220076 is the 6th row. Pandigital numbers A050278 is the 10th row. The subsequence of primes begins: 1023467, 1023487.

%t Select[Range[1000000, 1030000], Length[Union[IntegerDigits[#]]] == 7 &] (* _T. D. Noe_, Dec 04 2012 *)

%Y Cf. A031969, A050278, A220063, A220076.

%K nonn,base,easy

%O 1,1

%A _Jonathan Vos Post_, Dec 04 2012