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 A283311 #14 Dec 18 2018 18:37:56 %S A283311 0,1,50,1307,61513956,1458205461,235845043987769122519632535030 %N A283311 a(n) = (A054377(n) - 6)/36. %H A283311 J. Sondow and K. MacMillan, <a href="http://www.jstor.org/stable/10.4169/amer.math.monthly.124.3.232">Primary pseudoperfect numbers, arithmetic progressions, and the Erdős-Moser equation</a>, Amer. Math. Monthly, 124 (2017) 232-240; <a href="http://arxiv.org/abs/1812.06566">arXiv:math/1812.06566 [math.NT]</a>, 2018. %Y A283311 Cf. A054377. %K A283311 nonn,more %O A283311 2,3 %A A283311 _N. J. A. Sloane_, Mar 07 2017