%I A027690
%S A027690 5,7,11,17,25,35,47,61,77,95,115,137,161,187,215,245,277,311,347,385,
%T A027690 425,467,511,557,605,655,707,761,817,875,935,997,1061,1127,1195,1265,
%U A027690 1337,1411,1487,1565,1645,1727,1811,1897,1985,2075,2167,2261
%N A027690 n^2 + n + 5.
%C A027690 Except for the first term, a(n)=2*n+a(n-1), (with a(1)=7) [From Vincenzo 
               Librandi (vincenzo.librandi(AT)tin.it), Oct 23 2009]
%H A027690 P. De Geest, <a href="http://www.worldofnumbers.com/quasimor.htm">Palindromic 
               Quasi_Over_Squares of the form n^2+(n+X)</a>
%F A027690 a(n)=2*n+a(n-1)-2 (with a(1)=5) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 07 2009]
%e A027690 For n=2, a(2)=2*2+5-2=7; n=3, a(3)=2*3+7-2=11; n=4, a(4)=2*4+11-2=17 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
%p A027690 with (combinat):seq(fibonacci(3, n)+n+4, n=0..47); - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), Jun 07 2008
%t A027690 Table[n^2+n+5, {n, 0, 100}] (T. D. Noe, Oct 29 2009)
%Y A027690 Cf. A002522.
%Y A027690 Sequence in context: A156104 A067830 A106862 this_sequence A087200 A153118 
               A145987
%Y A027690 Adjacent sequences: A027687 A027688 A027689 this_sequence A027691 A027692 
               A027693
%K A027690 nonn
%O A027690 0,1
%A A027690 Patrick De Geest (pdg(AT)worldofnumbers.com)
%E A027690 Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 09 2006
%E A027690 Definition and offset fixed by Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), 
               Jul 06 2009