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 A233469 #14 Oct 17 2015 10:10:18 %S A233469 1184063,15563117,39561841,44745755,45863441,58314521,60763153, %T A233469 68431649,75453907,82083455,83399857,106710191,113838391,119740159, %U A233469 122257855,131184493,133460867,158678257,176038571,178694285,184874237,187552705,189773297,190928123 %N A233469 Values of n for which n^4 is a Sierpiński number. %H A233469 Wikipedia, <a href="http://en.wikipedia.org/wiki/Sierpinski_number">Sierpinski number</a> %Y A233469 Supersequence of A213353. Cf. A076336. %K A233469 nonn %O A233469 1,1 %A A233469 _Arkadiusz Wesolowski_, Apr 19 2014 %E A233469 More terms from _Arkadiusz Wesolowski_, Oct 14 2015