Search: id:A027694
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%I A027694
%S A027694 9,11,15,21,29,39,51,65,81,99,119,141,165,191,219,249,281,315,351,
%T A027694 389,429,471,515,561,609,659,711,765,821,879,939,1001,1065,1131,
%U A027694 1199,1269,1341,1415,1491,1569,1649,1731,1815,1901,1989,2079,2171
%N A027694 Numbers of form n^2 + (n+9).
%C A027694 Except for the first term, a(n)=2*n+a(n-1), (with a(1)=11) [From Vincenzo 
               Librandi (vincenzo.librandi(AT)tin.it), Oct 23 2009]
%H A027694 P. De Geest, <a href="http://www.worldofnumbers.com/quasimor.htm">Palindromic 
               Quasi_Over_Squares of the form n^2+(n+X)</a>
%F A027694 a(n)=2*n+a(n-1)-2 (with a(1)=9) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 07 2009]
%e A027694 For n=2, a(2)=2*2+9-2=11; n=3, a(3)=2*3+11-2=15; n=4, a(4)=2*4+15-2=21 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
%p A027694 with (combinat):seq(fibonacci(3, n)+n+8, n=0..46); - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), Jun 07 2008
%Y A027694 Cf. A002522.
%Y A027694 Sequence in context: A113339 A037009 A163096 this_sequence A063191 A048464 
               A075824
%Y A027694 Adjacent sequences: A027691 A027692 A027693 this_sequence A027695 A027696 
               A027697
%K A027694 nonn,new
%O A027694 1,1
%A A027694 Patrick De Geest (pdg(AT)worldofnumbers.com)

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