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 A203400 #10 Sep 12 2024 09:23:44 %S A203400 0,0,1,2,3,3,2,0,-2,-3,-2,1,5,8,8,4,-3,-10,-13,-9,2,16,26,25,10,-15, %T A203400 -39,-48,-32,8,57,90,83,27,-62,-144,-170,-107,38,209,317,280,72,-244, %U A203400 -523,-594,-349,175,770,1120,946,177,-942,-1887,-2063,-1120,768 %N A203400 Partial sums of A050935. %C A203400 a(n) = a(n-1) + A050935(n) for n > 1. %H A203400 Reinhard Zumkeller, <a href="/A203400/b203400.txt">Table of n, a(n) for n = 1..10000</a> %H A203400 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (2, -1, -1, 1). %o A203400 (Haskell) %o A203400 a203400 n = a203400_list !! (n-1) %o A203400 a203400_list = scanl1 (+) a050935_list %K A203400 sign %O A203400 1,4 %A A203400 _Reinhard Zumkeller_, Jan 01 2012