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Cubes which are palindromes in base 7.
1

%I #16 Aug 11 2024 14:23:45

%S 0,1,8,64,512,4096,125000,1000000,8000000,40707584,325660672,

%T 2605285376,13858588808,110868710464,886949683712,4748408986112,

%U 37987271888896,303898175111168,1628455122125000,13027640977000000

%N Cubes which are palindromes in base 7.

%H Patrick De Geest, <a href="https://www.worldofnumbers.com/nobase10pg4.htm">World!Of Numbers</a>, Palindromic cubes in bases 2 to 17.

%F a(n) = A046237(n)^3. - _Andrew Howroyd_, Aug 10 2024

%t Select[Range[0,250000]^3,IntegerDigits[#,7]==Reverse[IntegerDigits[#,7]]&] (* _Harvey P. Dale_, Oct 11 2022 *)

%Y Intersection of A029954 and A000578.

%Y Cf. A046237.

%K nonn,base

%O 1,3

%A _Patrick De Geest_, May 15 1998

%E Offset corrected by _Andrew Howroyd_, Aug 10 2024