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 A034026 #7 Jul 08 2025 20:02:40 %S A034026 1,2,4,5,8,9,10,13,16,17,18,20,26,29,32,34,36,37,40,41,45,49,52,53,58, %T A034026 61,64,65,68,72,73,74,80,81,82,85,89,90,97,98,100,101,104,106,109,113, %U A034026 116,117,121,122,128,130,136,137,144,145,146,148,149,153 %N A034026 Numbers that are primitively or imprimitively represented by x^2+y^2, but not both. %Y A034026 Cf. A001481, A008784, A022544, A034023-. %K A034026 nonn %O A034026 1,2 %A A034026 _N. J. A. Sloane_