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 A132384 #8 Sep 08 2024 19:56:04
%S A132384 1,3,6,6,11,17,24,24,24,34,45,57,70,84,99,99,116,134,153,173,194,216,
%T A132384 239,263,263,289,289,317,346,376,407,407,440,474,509,509,546,584,623,
%U A132384 663,704,746,789,833,878,924,971,1019,1019,1069,1120,1172,1225,1279
%N A132384 a(n) = Sum_{ k <= n, k is not an i-th power with i >= 2} k.
%o A132384 (PARI) a(n) = sum(x=1, n, if(!ispower(x), x));
%K A132384 nonn
%O A132384 1,2
%A A132384 _Cino Hilliard_, Nov 07 2007