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A048374 a(n)^3 is smallest cube containing exactly n 9's. 21
9, 31, 99, 998, 999, 7937, 9999, 99998, 99999, 996999, 999999, 6688699, 9999999, 97609999, 99969999, 999999998, 999899999, 9998999999, 9999999999, 9999699999, 99999989999, 99998999999, 997999998999 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(24) > 5*10^12, a(25) = 999996999999. - Giovanni Resta, Jun 29 2018
LINKS
Eric Weisstein's World of Mathematics, Cubic Number
MATHEMATICA
(* A048374 *)
nsmall = Table[Infinity, 11];
For[i = 0, i <= 10^6, i++, n0 = Count[IntegerDigits[i^3], 9];
If[nsmall[[n0]] > i, nsmall[[ n0]] = i]];
nsmall(* Robert Price, Sep 26 2018 *)
CROSSREFS
Sequence in context: A224000 A118444 A321598 * A226274 A184054 A140323
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 1999
EXTENSIONS
a(16)-a(22) from Lars Blomberg, Jun 12 2011
a(23) from Giovanni Resta, Jun 29 2018
STATUS
approved

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Last modified March 28 11:46 EDT 2024. Contains 371241 sequences. (Running on oeis4.)