OFFSET
1,1
COMMENTS
For any term a(n), all numbers of the form a(n)*10^3k, k >= 0, are in this sequence. We could call "primitive" the terms not of this form, i.e., those without trailing '0'.
FORMULA
a(n) = A294997(n)^3.
EXAMPLE
27 is in the sequence because it is a cube, 27 = 3^3, and its largest digit is 7.
PROG
(PARI) for(n=1, 250, vecmax(digits(n^3))==7 &&print1(n^3, ", "))
CROSSREFS
KEYWORD
nonn,base
AUTHOR
M. F. Hasler, Nov 13 2017
STATUS
approved