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 A084427 #7 Dec 20 2018 14:23:03 %S A084427 1598,1693,1761,1818,2285,2353,2437,2505,2972,3029,3401,3496,3564, %T A084427 3648,3716,4308,5299,5671,6043,6195,6263,6415,6635,6703,6798,6882, %U A084427 6950,7322,7474,7542,7637,7789,7914,8161,8533,8685,8753,8848,8905 %N A084427 Gregorian calendar years with Ascension Day in April. %C A084427 If Easter sunday is March 22, then Ascension Day is April 30. %H A084427 E. Weisstein, <a href="http://scienceworld.wolfram.com/astronomy/Easter.html">Easter</a>. %H A084427 <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a> %Y A084427 Cf. A060958. %K A084427 nonn,easy %O A084427 0,1 %A A084427 _Frank Ellermann_, Jun 27 2003