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 A260706 #7 Nov 17 2015 19:04:45 %S A260706 0,1,3,6,9,12,16,20,25,30,35,40,45,51,57,63,70,77,84,91,98,105,112, %T A260706 120,128,136,144,153,162,171,180,189,198,207,216,225,235,245,255,265, %U A260706 275,286,297,308,319,330,341,352,363,374,385,396,408,420,432,444,456 %N A260706 Row sums of A260672. %C A260706 a(n) = Sum(A260672(n,k): k=0..A193832(n)-1); %C A260706 A193832(n+1) = a(n+1) - a(n); %C A260706 a(A001318(n+1)) = A212760(n). %H A260706 Reinhard Zumkeller, <a href="/A260706/b260706.txt">Table of n, a(n) for n = 0..10000</a> %o A260706 (Haskell) %o A260706 a260706 = sum . a260672_row %Y A260706 Cf. A001318, A260672, A193832, A212760. %K A260706 nonn %O A260706 0,3 %A A260706 _Reinhard Zumkeller_, Nov 17 2015