Search: id:A026058
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%I A026058
%S A026058 13,25,41,63,90,123,162,209,263,325,395,475,564,663,772,893,1025,1169,
               1325,1495,
%T A026058 1678,1875,2086,2313,2555,2813,3087,3379,3688,4015,4360,4725,5109,5513,
               5937,6383,
%U A026058 6850,7339,7850,8385,8943,9525,10131,10763,11420,12103,12812,13549,14313,
               15105,15925
%N A026058 a(n) = (d(n)-r(n))/2, where d = A026057 and r is the periodic sequence 
               with fundamental period (0,0,1,0).
%F A026058 a(n)= - 0.125 - 0.125*( - 1)^n + 0.25*cos(n*Pi/2) + (n + 4)*(n^2 + 20*n 
               + 39)/12 [From Richard Choulet (richardchoulet(AT)yahoo.fr), Dec 
               13 2008]
%Y A026058 Sequence in context: A161603 A075033 A017533 this_sequence A032697 A125724 
               A163551
%Y A026058 Adjacent sequences: A026055 A026056 A026057 this_sequence A026059 A026060 
               A026061
%K A026058 nonn
%O A026058 4,1
%A A026058 Clark Kimberling (ck6(AT)evansville.edu)

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