OFFSET
1,2
EXAMPLE
18 is in the sequence since (18*12)^(1/3) = 6 (an integer), with 1 <= 12 <= 18.
MATHEMATICA
Table[If[Sum[1 - Ceiling[(n*k)^(1/3)] + Floor[(n*k)^(1/3)], {k, n}] > 0, n, {}], {n, 400}] // Flatten
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Dec 27 2020
STATUS
approved