

A179932


Number of distinct positive integers that can be formed with the decimal digits of n.


0



1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 2, 4, 2, 4, 4, 4, 4, 4, 4, 4, 2, 4, 4, 2, 4, 4, 4, 4, 4, 4, 2, 4, 4, 4, 2, 4, 4, 4, 4, 4, 2, 4, 4, 4, 4, 2, 4, 4, 4, 4, 2, 4, 4, 4, 4, 4, 2, 4, 4, 4, 2, 4, 4, 4, 4, 4, 4, 2, 4, 4, 2, 4, 4, 4, 4, 4, 4, 4, 2, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4, 2, 3, 5, 10, 10
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OFFSET

1,10


LINKS

Table of n, a(n) for n=1..103.


EXAMPLE

a(1) = 1 because there is only one number that can be formed with the digits in 1.
a(10) = 2 because the digits in 10 can be used to make 0, 1, 01, and 10, but only 1 and 10 are both nonzero and unique (obviously, 01=1).


MATHEMATICA

Table[Length[Union[FromDigits/@Flatten[Permutations/@Flatten[ Table[ Partition[ IntegerDigits[t], n, 1], {n, IntegerLength[t]}], 1], 1]/.(0> Nothing)]], {t, 110}] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 21 2016 *)


CROSSREFS

Sequence in context: A263991 A065285 A302437 * A267649 A071805 A063511
Adjacent sequences: A179929 A179930 A179931 * A179933 A179934 A179935


KEYWORD

nonn,base


AUTHOR

Dominick Cancilla, Aug 02 2010


STATUS

approved



