Search: id:A028884
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%I A028884
%S A028884 1,8,17,28,41,56,73,92,113,136,161,188,217,248,281,316,353,392,433,
%T A028884 476,521,568,617,668,721,776,833,892,953,1016,1081,1148,1217,1288,
%U A028884 1361,1436,1513,1592,1673,1756,1841,1928,2017,2108,2201,2296,2393
%N A028884 a(n) = (n+3)^2 - 8.
%H A028884 P. De Geest, <a href="http://www.worldofnumbers.com/consemor.htm">Palindromic 
               Quasipronics of the form n(n+x)</a>
%F A028884 a(n)=2*n+a(n-1)+3 (with a(1)=1) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 07 2009]
%e A028884 For n=2, a(2)=2+2+1+3=8; n=3, a(3)=2*3+8+3=17; n=4, a(4)=2*4+17+3=28 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 07 2009]
%t A028884 q=8;s=0;lst={};Do[s+=n;If[(s-q)>0,AppendTo[lst,s-q]],{n,1,6!,2}];lst 
               [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 25 2009]
%t A028884 s = 1; lst = {s}; Do[s += n; AppendTo[lst, s], {n, 7, 105, 2}]; lst [From 
               Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 12 2009]
%o A028884 (Other) SAGE:[lucas_number2(2,n,4) for n in xrange(3,50)]# [From Zerinvary 
               Lajos (zerinvarylajos(AT)yahoo.com), Mar 12 2009]
%Y A028884 Sequence in context: A052222 A044441 A056121 this_sequence A099358 A077222 
               A077221
%Y A028884 Adjacent sequences: A028881 A028882 A028883 this_sequence A028885 A028886 
               A028887
%K A028884 nonn,new
%O A028884 0,2
%A A028884 Patrick De Geest (pdg(AT)worldofnumbers.com)
%E A028884 Definition corrected by Omar E. Pol (info(AT)polprimos.com), Jul 27 2009

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