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 A034038 #7 Jul 08 2025 20:04:09 %S A034038 4,8,9,16,18,25,32,36,44,49,50,56,64,72,81,88,92,98,99,100,112,121, %T A034038 126,128,144,148,162,169,172,176,184,196,198,200,207,212,224,225,232, %U A034038 242,252,256,275,284,288,289,296,308,316,324,333,338,344,350 %N A034038 Imprimitively represented by (x^2+xy+2y^2, x>=0, y>=0). %Y A034038 Cf. A034035-A034042. %K A034038 nonn %O A034038 0,1 %A A034038 _N. J. A. Sloane_ %E A034038 Definition corrected by _N. J. A. Sloane_, Apr 30 2015