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 A143994 Years in which there are five Tuesdays in the month of February. 6
 1752, 1780, 1820, 1848, 1876, 1916, 1944, 1972, 2000, 2028, 2056, 2084, 2124, 2152, 2180, 2220, 2248, 2276, 2316, 2344, 2372, 2400, 2428, 2456, 2484, 2524, 2552, 2580, 2620, 2648, 2676, 2716, 2744, 2772, 2800, 2828, 2856, 2884, 2924, 2952, 2980, 3020, 3048 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MAPLE A143994 := proc(n) nper := (n-1) mod 13 ; floor((n-1)/13)*400+op(1+nper , [1780, 1820, 1848, 1876, 1916, 1944, 1972, 2000, 2028, 2056, 2084, 2124, 2152] ) ; end proc: seq(A143994(n), n=1..80) ; # R. J. Mathar, Mar 29 2010 MATHEMATICA (* Needs Mma version >= 9.0 *) okQ[y_] := LeapYearQ[{y}] && DayName[{y, 2, 1}] == Tuesday; Select[Range[1752, 3051, 4], okQ] (* Jean-François Alcover, Mar 27 2020 *) CROSSREFS Cf. A119406, A135795, A141039, A141287, A143995. Sequence in context: A172833 A172882 A251892 * A157325 A223448 A102327 Adjacent sequences:  A143991 A143992 A143993 * A143995 A143996 A143997 KEYWORD nonn AUTHOR J. Lowell, Sep 07 2008 EXTENSIONS More terms from R. J. Mathar, Mar 29 2010 a(1) = 1752 inserted by Jean-François Alcover, Mar 27 2020 STATUS approved

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Last modified October 24 07:04 EDT 2020. Contains 337975 sequences. (Running on oeis4.)