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

Author

Jonathan Vos Post, Dec 04 2012

Keywords

• nonn
• base
• easy

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.

Crossrefs

Cf. A031969, A050278, A220063, A220076.

Programs

Mathematica

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