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 A031139 Number of letters in English words for months of year. 10
 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 (list; graph; refs; listen; history; text; internal format)
 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 Time and Date, A Calendar website 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)[12-n%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

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Last modified March 31 03:48 EDT 2020. Contains 333136 sequences. (Running on oeis4.)