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Search: id:A119406
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| A119406 |
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Years in which there are five Sundays in the month of February. |
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+0
6
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| 1756, 1784, 1824, 1852, 1880, 1920, 1948, 1976, 2004, 2032, 2060, 2088, 2128, 2156, 2184, 2224, 2252, 2280, 2320, 2348, 2376, 2404, 2432, 2460, 2488, 2528, 2556, 2584, 2624, 2652, 2680, 2720, 2748, 2776, 2804, 2832, 2860, 2888, 2928, 2956, 2984, 3024
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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"The Gregorian calendar has been in use in the Western world since 1582 by Roman Catholic countries, and since 1752 by English speaking countries. The Gregorian calendar counts leap years every year divisible by 4, except for centuries not divisible by 400, which are not leap years." The Mathematica Book.
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REFERENCES
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George G. Szpiro, The Secret Life Of Numbers, 50 Easy Pieces On How Mathematicians Work And Think, Joseph Henry Press, Washington, D.C., 2006, Chapter 1, "Lopping Leap Years", pages 3-5.
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LINKS
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Author?, A calendar website
Index entries for sequences related to calendars
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MATHEMATICA
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(* first do *) Needs["Miscellaneous`Calendar`"] (* then *) fQ[y_] := Mod[y, 4] == 0 && Mod[y, 400] ? 0 && DayOfWeek[{y, 2, 1}] == Sunday; Select[ Range[1582, 3051], fQ@# &]
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CROSSREFS
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Cf. A008685, A011763, A011770.
A135795, A143994, A141039, A143995, A141287 [From J. Lowell (jhbubby(AT)mindspring.com), Oct 06 2008]
Sequence in context: A102327 A076809 A043436 this_sequence A031802 A020419 A141287
Adjacent sequences: A119403 A119404 A119405 this_sequence A119407 A119408 A119409
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KEYWORD
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nonn
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AUTHOR
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George G. Szpiro (george(AT)netvision.net.il) and Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2006
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