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Number of letters in Spanish words for months of the year.
5

%I #16 Jul 20 2024 11:19:19

%S 5,7,5,5,4,5,5,6,10,7,9,9,5,7,5,5,4,5,5,6,10,7,9,9,5,7,5,5,4,5,5,6,10,

%T 7,9,9,5,7,5,5,4,5,5,6,10,7,9,9,5,7,5,5,4,5,5,6,10,7,9,9,5,7,5,5,4,5,

%U 5,6,10,7,9,9,5,7,5,5,4,5,5,6,10,7,9,9

%N Number of letters in Spanish words for months of the year.

%C Enero = 5 letters; Febrero = 7; Marzo = 5; Abril = 5; Mayo = 4; Junio = 5; Julio = 5; Agosto = 6; Septiembre = 10; Octubre = 7; Noviembre = 9; Diciembre = 9.

%C Period 12: repeat [5, 7, 5, 5, 4, 5, 5, 6, 10, 7, 9, 9].

%H <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a>.

%H <a href="/index/Periodic#12">Index to 12-periodic sequences</a>.

%H <a href="/index/Rec#order_12">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,0,0,0,0,0,0,0,1).

%F From _Elmo R. Oliveira_, Jul 18 2024: (Start)

%F G.f.: x*(5 + 7*x + 5*x^2 + 5*x^3 + 4*x^4 + 5*x^5 + 5*x^6 + 6*x^7 + 10*x^8 + 7*x^9 + 9*x^10 + 9*x^11)/(1 - x^12).

%F a(n) = a(n-12) for n > 12. (End)

%Y Cf. A031139, A182495.

%K nonn,word,easy

%O 1,1

%A _Claudio Meller_, Jun 08 2009

%E a(37)-a(84) from _Elmo R. Oliveira_, Jul 18 2024