A046238 Cubes which are palindromes in base 7.

0, 1, 8, 64, 512, 4096, 125000, 1000000, 8000000, 40707584, 325660672, 2605285376, 13858588808, 110868710464, 886949683712, 4748408986112, 37987271888896, 303898175111168, 1628455122125000, 13027640977000000

Offset: 1

Author

Patrick De Geest, May 15 1998

Keywords

• nonn
• base

Links

• Patrick De Geest, World!Of Numbers, Palindromic cubes in bases 2 to 17.

Crossrefs

Intersection of A029954 and A000578.

Cf. A046237.

Programs

Mathematica

Select[Range[0,250000]^3,IntegerDigits[#,7]==Reverse[IntegerDigits[#,7]]&] (* Harvey P. Dale, Oct 11 2022 *)

Formula

a(n) = A046237(n)^3. - Andrew Howroyd, Aug 10 2024

Extensions

Offset corrected by Andrew Howroyd, Aug 10 2024