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 A330314 #13 Dec 11 2019 16:42:47 %S A330314 1,4,2,13,20,16,10,2,23,28,16,2,91,100,82,56,40,20,10,23,40,16,91,130, %T A330314 100,68,91,142,173,151,194,160,112,68,40,4,23,52,10,91,23,56,91,160, %U A330314 100,28,91,164,112,56,16,121,182,112,28,121,212,130,80,121,23,68,121,224,160,82,28,151,23 %N A330314 Running totals in A330313. %C A330314 By construction this is always >= 0 and a palindrome in base 3. %C A330314 a(n) = a(n-1) +- A330313(n), using - if A330313(n) is even and otherwise +. %H A330314 Rémy Sigrist, <a href="/A330314/b330314.txt">Table of n, a(n) for n = 1..50000</a> (first 1000 terms from N. J. A. Sloane) %H A330314 Rémy Sigrist, <a href="/A330314/a330314.png">Scatterplot of the first 1000000 terms</a> %Y A330314 Cf. A330313; A329544, A329796. %K A330314 nonn,look,base %O A330314 1,2 %A A330314 _N. J. A. Sloane_, Dec 11 2019