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 A374190 #10 Oct 07 2024 02:03:37 %S A374190 0,4,6,8,14,16,20,22,30,32,36,38,40,46,52,54,62,64,68,70,72,78,80,84, %T A374190 86,94,100,102,104,110,116,118,126,128,132,134,136,142,144,148,150, %U A374190 158,160,164,166,168,174,180,182,190,196,198,200,206,208,212,214,222 %N A374190 Complement of A374189 in A005843. %C A374190 k is a term if and only if for all a of the form 4*n - 1 (n>=1) there is an even k such that K(a / k) = K((-1)^floor(k/2)*k / a), where K denotes the Kronecker symbol (A372728). %Y A374190 Cf. A374189, A005843 (even numbers). %K A374190 nonn %O A374190 1,2 %A A374190 _Peter Luschny_, Jul 02 2024