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 A024084 #9 Sep 08 2022 08:44:48 %S A024084 1,6,-463,-19340,-259743,-1936318,-9960047,-39530064,-128452927, %T A024084 -347066882,-717524751,-380620948,8681506849,86284511034,657562026065, %U A024084 4709118150568,33164211092865,232511926110710,1628215238620081 %N A024084 a(n) = 7^n - n^9. %H A024084 Vincenzo Librandi, <a href="/A024084/b024084.txt">Table of n, a(n) for n = 0..400</a> %o A024084 (Magma) [7^n-n^9: n in [0..20]]; // _Vincenzo Librandi_, Jul 04 2011 %K A024084 sign,easy %O A024084 0,2 %A A024084 _N. J. A. Sloane_