This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A046240 #15 Aug 11 2024 14:26:22 %S A046240 0,1,27,729,274625,389017,135005697,68769820673,72043225281, %T A046240 35187593412609,18014604668698625,18120364883707393, %U A046240 9223385231000600577,4722367327294625677313,4725826936714463031297 %N A046240 Cubes which are palindromes in base 8. %H A046240 Patrick De Geest, <a href="https://www.worldofnumbers.com/nobase10pg4.htm">World!Of Numbers</a>, Palindromic cubes in bases 2 to 17. %F A046240 a(n) = A046239(n)^3. - _Andrew Howroyd_, Aug 10 2024 %Y A046240 Intersection of A029803 and A000578. %Y A046240 Cf. A046239. %K A046240 nonn,base %O A046240 1,3 %A A046240 _Patrick De Geest_, May 15 1998 %E A046240 Offset corrected by _Andrew Howroyd_, Aug 10 2024