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 A025420 #12 Jul 03 2025 18:53:08
%S A025420 4,219,1225,1979,5105,6883,13104,27720,42120,21896,46872,62244,81081,
%T A025420 77896,138320,169344,116200,216216,246645,314496,361368,406224,444600,
%U A025420 375193,563472,353808,497952,923104,687960,1149120,1245888,1369368
%N A025420 Least sum of 4 positive cubes in exactly n ways.
%F A025420 min{k: A025457(k) = n}. - _R. J. Mathar_, Jun 15 2018
%K A025420 nonn
%O A025420 1,1
%A A025420 _David W. Wilson_, May 29 1997
%E A025420 Extended by _Ray Chandler_ Mar 23 2005