OFFSET
1,1
COMMENTS
The sequence of cubes starts: 24389, 39304, 59319, 97336, 1643032, 1953125, 2803221, 2863288, ...
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..10000
Jeremy Gardiner, Middle digit in cube numbers, Seqfan Mailing list, Dec 12 2016.
EXAMPLE
29^3 = 24(3)89, 161^3 = 417(3)281, 663^3 = 2914(3)4247.
MATHEMATICA
Select[Range[925], OddQ[len=Length[IntegerDigits[#^3]]]&&Part[IntegerDigits[#^3], (len+1)/2]==3 &] (* Stefano Spezia, Oct 03 2023 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Lars Blomberg, Jan 07 2017
STATUS
approved