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 A203623 #14 Mar 31 2012 10:32:27 %S A203623 0,1,3,4,7,9,13,14,16,19,24,26,32,36,39,40,47,49,57,60,64,69,78,80,83, %T A203623 89,91,95,105,108,119,120,125,132,136,138,150,158,164,167,180,184,198, %U A203623 203,206,215,230,232,236,239,246,252,268,270,275,279,287 %N A203623 Partial sums of A061395. %F A203623 a(n) = a(n-1) + A061395(n) %e A203623 a(10) = a(9) + A061395(10) ; a(9)=16 ; A061395(10)=3 ; %e A203623 a(10) = 16+3 = 19. %K A203623 nonn %O A203623 1,3 %A A203623 _Jacques ALARDET_, Jan 04 2012