OFFSET
1,2
COMMENTS
Subsequence of A181123.
EXAMPLE
37 = 4^3 - 3^3.
117 = 5^3 - 2^3.
PROG
(PARI) isok(n)={my(t=(sqrtnint(n, 3)+1)^3-n); sqrtnint(t, 3)^3 == t} \\ Andrew Howroyd, Mar 26 2021
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Lamine Ngom, Mar 26 2021
STATUS
approved