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 A165578 #7 Feb 12 2022 13:18:11 %S A165578 0,1,0,1,2,3,2,1,0,1,0,1,2,1,2,3,4,5,4,5,6,5,4,3,2,3,4,5,4,3,2,1,0,1, %T A165578 0,-1,0,1,0,-1,-2,-3,-2,-1,0,1,2,1,2,3,2,3,2,3,2,3,4,5,6,5,6,7,8,7,8, %U A165578 7,6,5,6,5,6,7,6,5,4,5,6,5,6,5,6,7,8,9,8,9,8,7,6,5,4,5,4,3,4,5,4,5,4 %N A165578 Partial sums of A011627. %C A165578 Period 229. %H A165578 A. Karttunen, <a href="/A165578/b165578.txt">Table of n, a(n) for n = 0..229</a> %F A165578 a(n) = -(a(n-1) + a(n-2) + ... + a(n-228)) = a(n-229). - _Charles R Greathouse IV_, Feb 11 2013 %t A165578 Accumulate[JacobiSymbol[Range[0,120],229]] (* _Harvey P. Dale_, Feb 12 2022 *) %o A165578 (PARI) a(n)=sum(k=1,n%229,kronecker(k,229)) \\ _Charles R Greathouse IV_, Feb 11 2013 %Y A165578 Similar sequences: A165575-A165579, A165472, A165477, A165482, A165582, A165587, A165592, A165597. %K A165578 sign,easy %O A165578 0,5 %A A165578 _Antti Karttunen_, Sep 22 2009