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A204633 Least k such that k!*n! contains every digit at least once. 1
23, 23, 17, 25, 18, 17, 23, 21, 18, 17, 17, 19, 15, 17, 16, 12, 14, 2, 4, 11, 18, 7, 4, 0, 9, 3, 3, 0, 6, 2, 2, 0, 4, 0, 0, 0, 0, 0, 3, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

It is extremely probable that a(n) = 0 for all n >= 42.

LINKS

Table of n, a(n) for n=0..80.

MATHEMATICA

Table[k=0; While[!Length[Union[IntegerDigits[k!*n!]]]==10, k++]; k, {n, 0, 60}]

CROSSREFS

Cf. A000142, A204598.

Sequence in context: A255228 A255221 A072135 * A010862 A291570 A141460

Adjacent sequences:  A204630 A204631 A204632 * A204634 A204635 A204636

KEYWORD

nonn,base

AUTHOR

Michel Lagneau, Jan 17 2012

STATUS

approved

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Last modified July 19 12:49 EDT 2019. Contains 325159 sequences. (Running on oeis4.)