|
|
A077743
|
|
Smallest cube ending in n, or 0 if no such cube exists.
|
|
3
|
|
|
1, 512, 343, 64, 125, 216, 27, 8, 729, 0, 357911, 512, 4913, 0, 0, 216, 389017, 0, 59319, 0, 68921, 0, 103823, 13824, 125, 0, 27, 1728, 729, 0, 1331, 5832, 456533, 0, 0, 97336, 35937, 0, 493039, 0, 531441, 0, 343, 2744, 0, 0, 250047, 10648, 117649, 0, 132651
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
FORMULA
|
a(m*10^(3k+1)) = a(m*10^(3k+2) = 0.
|
|
EXAMPLE
|
a(1) = 4913 = 17^3, a(10) = 0.
|
|
MAPLE
|
f:= proc(n) local m, r, x;
m:= 10^(ilog10(n)+1);
r:= [msolve(x^3=n, m)];
if r = [] then 0 else min(map(t -> rhs(op(t)), r))^3 fi
end proc:
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|