

A031139


Number of letters in English words for months of year.


9



7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8, 7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8, 7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8, 7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8, 7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8, 7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8
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OFFSET

1,1


COMMENTS

Period 12.
According to the definition this should strictly speaking be finite: there is no 13th month of the year. But for several reasons we prefer to see this as an infinite periodic sequence.  M. F. Hasler, Mar 05 2018


LINKS

Table of n, a(n) for n=1..72.
Time and Date, A Calendar website
Index entries for sequences related to calendars
Index to 12periodic sequences


EXAMPLE

a(1) = 7 because January has 7 letters.


MATHEMATICA

PadRight[{}, 72, {7, 8, 5, 5, 3, 4, 4, 6, 9, 7, 8, 8}] (* or *)
Array[StringLength@ DateString[DateObject[{0, Mod[#, 12] + 1, 1, 0, 0, 0}, "Month"], {"MonthName"}] &, 72, 0] (* Michael De Vlieger, Feb 25 2018 *)


PROG

(PARI) A031139(n)=digits(879644355878)[12n%12] \\ M. F. Hasler, Mar 05 2018


CROSSREFS

Cf. A089746.
Sequence in context: A076419 A217516 A071420 * A215733 A226750 A021564
Adjacent sequences: A031136 A031137 A031138 * A031140 A031141 A031142


KEYWORD

nonn,word


AUTHOR

Dmitri Papichev (Dmitri.Papichev(AT)iname.com)


STATUS

approved



