A218019 Integers in which the number of distinct base-10 digits is 7.

1023456, 1023457, 1023458, 1023459, 1023465, 1023467, 1023468, 1023469, 1023475, 1023476, 1023478, 1023479, 1023485, 1023486, 1023487, 1023489, 1023495, 1023496, 1023497, 1023498, 1023546, 1023547, 1023548, 1023549, 1023564, 1023567, 1023568, 1023569

Offset

1,1

Comments

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.

Links

Table of n, a(n) for n=1..28.

Mathematica

Select[Range[1000000, 1030000], Length[Union[IntegerDigits[#]]] == 7 &] (* T. D. Noe, Dec 04 2012 *)

Crossrefs

Cf. A031969, A050278, A220063, A220076.

Sequence in context: A254258 A254304 A346266 * A074667 A235159 A235695

Adjacent sequences: A218016 A218017 A218018 * A218020 A218021 A218022

Keyword

nonn,base,easy

Author

Jonathan Vos Post, Dec 04 2012

Status

approved