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A033829 Numbers that can be expressed as the product of two 3-digit numbers in at least one way. 0
10000, 10100, 10200, 10201, 10300, 10302, 10400, 10403, 10404, 10500, 10504, 10506, 10600, 10605, 10608, 10609, 10700, 10706, 10710, 10712, 10800, 10807, 10812, 10815, 10816, 10900, 10908, 10914, 10918, 10920, 11000, 11009, 11016 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Last term is 998001=999*999.

LINKS

Table of n, a(n) for n=1..33.

MATHEMATICA

nMax=12000; lim=Min[999, Ceiling[nMax/100]]; Select[Union[Times@@@Tuples[Range[100, lim], {2}]], #<=nMax&]  (* Harvey P. Dale, Mar 14 2011 *)

PROG

(PARI) listall()=my(v=List()); for(a=100, 999, for(b=a, 999, listput(v, a*b))); Set(v) \\ Charles R Greathouse IV, Oct 22 2014

CROSSREFS

Sequence in context: A033433 A096973 A153747 * A004268 A004269 A004270

Adjacent sequences:  A033826 A033827 A033828 * A033830 A033831 A033832

KEYWORD

nonn,fini,base

AUTHOR

Jeff Burch

STATUS

approved

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Last modified October 16 05:35 EDT 2019. Contains 328044 sequences. (Running on oeis4.)