A001356 Dates at fortnightly intervals from Jan 01 in the Julian calendar. (Formerly M4961 N2127)

1, 15, 29, 12, 26, 12, 26, 9, 23, 7, 21, 4, 18, 2, 16, 30, 13, 27, 10, 24, 8, 22, 5, 19, 3, 17, 31, 14, 28, 11, 25, 11, 25, 8, 22, 6, 20, 3, 17, 1, 15, 29, 12, 26, 9, 23, 7, 21, 4, 18, 2, 16, 30, 13, 27, 10, 24, 10, 24, 7, 21, 5, 19, 2, 16, 30, 14, 28, 11, 25, 8, 22, 6, 20, 3, 17, 1, 15

Offset

1,2

Comments

Sequence assumes that the first year is the year after a leap year.

Periodic sequence with period 1461. - John Cerkan, Mar 26 2017

References

Archimedeans Problems Drive, Eureka, 13 (1950), 11.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

John Cerkan, Table of n, a(n) for n = 1..10000

John Cerkan, Python 2.7

Index entries for sequences related to calendars

Mathematica

(* First program no longer functions in current Mathematica versions *)
(* first do *) Needs["Calendar`"]; (* then *) Table[Calendar`DaysPlus[{1, 1, 1}, 14 n][[3]], {n, 0, 77}] (* Robert G. Wilson v, Apr 18 2010 *)
Table[DateValue[DayPlus[{1, 1, 1}, 14 n, CalendarType->"Julian"], "Day"], {n, 0, 77}] (* recent Mathematica version, Giovanni Resta, Mar 22 2017; amended, Ray Chandler, Aug 07 2023 *)

Crossrefs

Cf. A051121.

Sequence in context: A022997 A256876 A051121 * A104811 A131877 A354161

Adjacent sequences: A001353 A001354 A001355 * A001357 A001358 A001359

Keyword

nonn,easy,nice

Author

N. J. A. Sloane

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), Mar 17 2000

One more term from Robert G. Wilson v, Apr 18 2010

Name edited by Charles R Greathouse IV, Mar 27 2017

Status

approved