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 A350027 #27 Jan 29 2022 14:36:50 %S A350027 1583,1585,1588,1591,1594,1597,1600,1601,1604,1605,1607,1608,1611, %T A350027 1612,1615,1618,1621,1624,1627,1628,1629,1631,1632,1634,1635,1638, %U A350027 1639,1642,1645,1648,1649,1651,1654,1656,1658,1659,1662,1665,1666,1668,1669,1672,1675 %N A350027 Years in which Easter falls on the same day and month in both the Julian and Gregorian calendars, starting with 1583. %C A350027 The Gregorian calendar was introduced in October 1582 by Pope Gregory XIII. %H A350027 Wikipedia, <a href="https://en.wikipedia.org/wiki/List_of_dates_for_Easter">List of dates for Easter</a> %H A350027 Wikipedia, <a href="https://en.wikipedia.org/wiki/Date_of_Easter">Date of Easter</a> %H A350027 <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a> %Y A350027 Cf. A060958, A104019, A104034. %K A350027 nonn %O A350027 1,1 %A A350027 _Bartlomiej Malarz_, Dec 22 2021