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 A064264 #19 Dec 22 2024 20:36:08
%S A064264 0,19,8,27,16,5,24,13,2,21,10,29,18,7,26,15,4,23,12,1,20,9,28,17,6,25,
%T A064264 14,3,22,11,0,19,8,27,16,5,24,13,2,21,10,29,18,7,26,15,4,23,12,1,20,9,
%U A064264 28,17,6,25,14,3,22,11,0,19,8,27,16,5,24,13,2,21,10,29
%N A064264 a(n) = 19*n mod 30.
%C A064264 Paschal term in Julian calendar for a year with Golden Number n+10.
%D A064264 B. Blackburn and L. Hollford-Stevens, The Oxford Companion to the Year, Oxford, 1999; see p. 821.
%H A064264 Harry J. Smith, <a href="/A064264/b064264.txt">Table of n, a(n) for n = 0..1000</a>
%H A064264 <a href="/index/Rec#order_30">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%p A064264 A064264:=n->19*n mod 30: seq(A064264(n), n=0..150); # _Wesley Ivan Hurt_, Apr 10 2017
%o A064264 (PARI) a(n) = { 19*n % 30 } \\ _Harry J. Smith_, Sep 10 2009
%K A064264 nonn,easy
%O A064264 0,2
%A A064264 _N. J. A. Sloane_, Sep 24 2001