%I #20 Jul 16 2024 21:46:57
%S 6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,
%T 8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,
%U 6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8,6,6,7,9,8,6,8
%N Number of letters in English names for days of week.
%C Period 7, repeat [6, 6, 7, 9, 8, 6, 8]. - _Joerg Arndt_, Sep 20 2023
%H <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,0,0,1).
%F From _Elmo R. Oliveira_, Jul 16 2024: (Start)
%F G.f.: (6 + 6*x + 7*x^2 + 9*x^3 + 8*x^4 + 6*x^5 + 8*x^6)/(1-x^7).
%F a(n) = a(n-7) for n >= 7. (End)
%e a(0)=6 because "Sunday" has 6 letters.
%K easy,nonn,word,dumb,less
%O 0,1
%A Deepak R. N (deepak_rama(AT)bigfoot.com)
%E Offset 0 from _Michel Marcus_, Aug 12 2023