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A048370
a(n)^3 is smallest cube containing exactly n 5's.
10
5, 25, 136, 715, 1526, 11828, 8121, 115798, 319405, 1771087, 2179693, 11665419, 38160335, 176024528, 1367063798, 3257101805, 9109186828, 38598478444, 136736651535, 380814792667, 821922685008
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Cubic Number
MATHEMATICA
nsmall = Table[Infinity, 15];
For[i = 0, i <= 10^6, i++, n0 = Count[IntegerDigits[i^3], 5];
If[nsmall[[n0]] > i, nsmall[[n0]] = i]];
Cases[nsmall, _?NumberQ] (* Robert Price, Mar 20 2020 *)
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 1999
EXTENSIONS
a(14) from Michel ten Voorde Jun 13 2003
a(15)-a(20) from Lars Blomberg, Jun 12 2011
a(21) from Giovanni Resta, Jun 29 2018
STATUS
approved