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A072295 Smallest factorial containing exactly n 1's. 1
1, 87178291200, 121645100408832000, 15511210043330985984000000, 263130836933693530167218012160000000, 815915283247897734345611269596115894272000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

a(2)=87178291200 so 87178291200 is the smallest factorial containing exactly two 1's.

MATHEMATICA

With[{fctrs=Range[100]!}, Table[First[Select[fctrs, DigitCount[#, 10, 1] == n&]], {n, 10}]] (* Harvey P. Dale, Sep 29 2011 *)

CROSSREFS

Sequence in context: A164727 A164728 A011525 * A172538 A045519 A283459

Adjacent sequences:  A072292 A072293 A072294 * A072296 A072297 A072298

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Jul 30 2002

STATUS

approved

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Last modified April 19 06:30 EDT 2019. Contains 322237 sequences. (Running on oeis4.)