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 A176478 #19 Jul 26 2023 20:39:42
%S A176478 1772,1812,1840,1868,1896,1908,1936,1964,1992,2020,2048,2076,2116,
%T A176478 2144,2172,2212,2240,2268,2296,2308,2336,2364,2392,2420,2448,2476,
%U A176478 2516,2544,2572,2612,2640,2668,2696,2708,2736,2764,2792,2820,2848,2876,2916,2944,2972,3012,3040
%N A176478 Years in which there are five Saturdays in the month of February.
%H A176478 <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a>
%H A176478 <a href="/index/Rec#order_15">Index entries for linear recurrences with constant coefficients</a>, signature (1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1).
%t A176478 (* Needs Mma version >= 9.0 *)
%t A176478 okQ[y_] := LeapYearQ[{y}] && DayName[{y, 2, 1}] == Saturday;
%t A176478 Select[Range[1752, 3052, 4], okQ] (* _Jean-François Alcover_, Mar 27 2020 *)
%Y A176478 Cf. A119406 (Sun), A135795 (Mon), A143994 (Tue), A141039 (Wed), A143995 (Thu), A141287 (Fri).
%K A176478 nonn
%O A176478 1,1
%A A176478 _Robert G. Wilson v_, Apr 18 2010
%E A176478 Wrong years removed by _J. Lowell_, Apr 22 2010
%E A176478 Corrected and extended by _Jean-François Alcover_, Mar 27 2020