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 A330422 #9 Dec 16 2019 02:19:44 %S A330422 0,1,4,0,9,4,16,9,1,16,0,25,36,49,25,4,36,16,49,9,36,64,81,100,64,25, %T A330422 81,36,1,49,0,64,9,81,144,121,64,4,81,16,100,144,196,225,256,324,361, %U A330422 441,400,324,225,144,49,100,169,256,361,484,441,529,576,484,625 %N A330422 Running totals in A330403. %C A330422 All terms are square numbers. %H A330422 Rémy Sigrist, <a href="/A330422/b330422.txt">Table of n, a(n) for n = 0..10000</a> %H A330422 Rémy Sigrist, <a href="/A330422/a330422.gp.txt">PARI program for A330422</a> %F A330422 A330403(n) = abs(a(n) - a(n-1)). %o A330422 (PARI) See Links section. %Y A330422 Cf. A330403. %K A330422 nonn %O A330422 0,3 %A A330422 _Rémy Sigrist_, Dec 14 2019