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 A055054 #8 Mar 09 2022 10:51:21 %S A055054 1,4,7,10,13,15,16,19,22,23,25,28,31,34,37,39,40,43,46,47,49,52,55,58, %T A055054 60,61,63,64,67,70,71,73,76,79,82,85,87,88,91,92,94,95,97,100,103,106, %U A055054 109,111,112,115,118,119,121,124,127,130,133,135,136 %N A055054 Numbers of the form 4^i*(8j+7) or 4^i*(3j+1). %C A055054 The numbers not of the form 2x^2+3y^2+6z^2. %H A055054 L. J. Mordell, <a href="https://doi.org/10.1093/qmath/os-1.1.276">A new Waring's problem with squares of linear forms</a>, Quart. J. Math., 1 (1930), 276-288 (see p. 283). %K A055054 nonn %O A055054 1,2 %A A055054 _N. J. A. Sloane_, Jun 02 2000