Search: id:A117951
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%I A117951
%S A117951 5,6,9,14,21,30,41,54,69,86,105,126,149,174,201,230,261,294,329,366,405,
%T A117951 446,489,534,581,630,681,734,789,846,905,966,1029,1094,1161,1230,1301,
%U A117951 1374,1449,1526,1605,1686,1769,1854,1941,2030,2121,2214,2309,2406,2505
%N A117951 n^2+5.
%H A117951 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Near-SquarePrime.html">Near-Square Prime</a>
%F A117951 a(n)=2*n+a(n-1)-3 (with a(1)=5) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 07 2009]
%e A117951 For n=2, a(2)=2*2+5-3=6; n=3, a(3)=2*3+6-3=9; n=4, a(4)=2*4+9-3=14 [From 
               Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
%t A117951 lst={};Do[AppendTo[lst, n^2+5], {n, 0, 6!, 1}];lst [From Vladimir Orlovsky 
               (4vladimir(AT)gmail.com), Nov 07 2008]
%o A117951 (Other) sage: [lucas_number1(3,n,-5) for n in xrange(0, 51)] # [From 
               Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 16 2009]
%Y A117951 For numbers n such that n^2 + 5 is prime, see A078402
%Y A117951 Sequence in context: A082576 A074185 A047438 this_sequence A124519 A154311 
               A014980
%Y A117951 Adjacent sequences: A117948 A117949 A117950 this_sequence A117952 A117953 
               A117954
%K A117951 nonn,easy,new
%O A117951 0,1
%A A117951 Eric Weisstein (eric(AT)weisstein.com), Apr 04, 2006

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