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 A061886 #5 Dec 24 2013 10:16:23 %S A061886 1,1,1,1,4,4,9,16,36,64,121,256,484,961,1936,3844,7569,15129,30276, %T A061886 60516,121104,242064,483025,966289,1932100,3865156,7728400,15452761, %U A061886 30902481,61811044,123609924,247212729,494439696,988850916,1977669841 %N A061886 Largest square less than or equal to sum of previous terms. %H A061886 Reinhard Zumkeller, <a href="/A061886/b061886.txt">Table of n, a(n) for n = 0..1000</a> %F A061886 For n > 0: a(n) = A060984(n+1)-A060984(n) = A048760(A060984(n)). %e A061886 a(6) = 9 since 1+1+1+1+4+4 = 12 and 9 is the largest square less than or equal to this. %o A061886 (Haskell) %o A061886 a061886 n = a061886_list !! n %o A061886 a061886_list = 1 : zipWith (-) (tail a060984_list) a060984_list %o A061886 -- _Reinhard Zumkeller_, Dec 24 2013 %Y A061886 Cf. A061883. %K A061886 nonn %O A061886 0,5 %A A061886 _Henry Bottomley_, May 12 2001 %E A061886 Formula corrected by _Reinhard Zumkeller_, Dec 24 2013