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 A004815 #16 Aug 02 2020 21:23:49 %S A004815 4,2051,4098,6145,8192,177150,179197,181244,183291,354296,356343, %T A004815 358390,531442,533489,708588,4194307,4196354,4198401,4200448,4371453, %U A004815 4373500,4375547,4548599,4550646,4725745,8388610,8390657,8392704,8565756,8567803,8742902,12582913,12584960 %N A004815 Numbers that are the sum of 4 positive 11th powers. %H A004815 David A. Corneth, <a href="/A004815/b004815.txt">Table of n, a(n) for n = 1..10000</a> (first 1000 terms from T. D. Noe) %e A004815 From _David A. Corneth_, Aug 02 2020: (Start) %e A004815 1832131388239 is in the sequence as 1832131388239 = 1^11 + 8^11 + 9^11 + 13^11. %e A004815 12762083148257 is in the sequence as 12762083148257 = 9^11 + 9^11 + 14^11 + 15^11. %e A004815 18443784349696 is in the sequence as 18443784349696 = 8^11 + 10^11 + 12^11 + 16^11. (End) %K A004815 nonn %O A004815 1,1 %A A004815 _N. J. A. Sloane_