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 A011596 #10 Jul 08 2025 02:28:10 %S A011596 0,1,-1,-1,1,-1,1,-1,-1,1,1,-1,-1,-1,1,1,1,1,-1,1,-1,1,1,1,1,1,1,-1, %T A011596 -1,1,-1,-1,-1,1,-1,1,1,1,-1,1,1,-1,-1,-1,-1,-1,-1,1,-1,1,-1,-1,-1,-1, %U A011596 1,1,1,-1,-1,1,1,-1,1,-1,1,1,-1,0,1,-1,-1,1,-1,1,-1,-1,1,1,-1,-1,-1 %N A011596 Legendre symbol (n,67). %D A011596 G. H. Hardy and E. M. Wright, An Introduction to the Theory of Numbers. 3rd ed., Oxford Univ. Press, 1954, p. 68. %t A011596 JacobiSymbol[Range[0,100],67] (* _Harvey P. Dale_, Jan 07 2023 *) %K A011596 sign,mult %O A011596 0,1 %A A011596 _N. J. A. Sloane_