A011763 - OEIS

A011763

Days in year in proleptic Gregorian calendar.

365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366, 365, 365, 365, 366

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OFFSET

1,1

COMMENTS

This sequence is periodic with period 400. The exceptions to the apparent period 4 are a(100) = a(200) = a(300) = 365. - Franklin T. Adams-Watters, Jul 10 2009

LINKS

Table of n, a(n) for n=1..48.

Index entries for sequences related to calendars

Index entries for linear recurrences with constant coefficients, order 400.

MATHEMATICA

(* first do *) Needs["Calendar`"] (* then *) Table[ DaysBetween[{y, 1, 1}, {y + 1, 1, 1}], {y, 48}] (* Robert G. Wilson v, Apr 18 2010 *)

PROG

(PARI) a(n)=if(n%4, 365, if(n%100, 366, n%400, 366, 365)) \\ Charles R Greathouse IV, Oct 13 2022

CROSSREFS

Sequence in context: A099113 A350555 A073304 * A116354 A276304 A033171

Adjacent sequences: A011760 A011761 A011762 * A011764 A011765 A011766

KEYWORD

nonn,easy

AUTHOR

Juan-Carlos Lerman (jclerm(AT)aztec.asu.edu)

STATUS

approved