%I A028563
%S A028563 0,8,18,30,44,60,78,98,120,144,170,198,228,260,294,330,368,408,450,
%T A028563 494,540,588,638,690,744,800,858,918,980,1044,1110,1178,1248,1320,
%U A028563 1394,1470,1548,1628,1710,1794,1880,1968,2058,2150,2244
%N A028563 n(n+7).
%H A028563 P. De Geest, <a href="http://www.worldofnumbers.com/consemor.htm">Palindromic 
               Quasipronics of the form n(n+x)</a>
%F A028563 Equals 2*A055999. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 
               12 2007
%F A028563 a(n)=2*n+a(n-1)+4 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 08 2009]
%e A028563 For n=2, a(2)=2*2+0+4=8; n=3, a(3)=2*3+8+4=18; n=4, a(4)=2*4+18+4=30 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 08 2009]
%p A028563 a:=n->sum(n,j=8..n): seq(a(n), n=7..51); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), 
               Feb 12 2007
%p A028563 with (combinat):seq(fibonacci(3, n)+n-13, n=3..47); - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), Jun 07 2008
%p A028563 with(finance):seq(add(cashflows([2,k,k], 0 ),k=3..n),n=2..51); - Zerinvary 
               Lajos (zerinvarylajos(AT)yahoo.com), Jun 30 2008
%t A028563 lst={};Do[AppendTo[lst, n*(n+7)], {n, 0, 6!}];lst [From Vladimir Orlovsky 
               (4vladimir(AT)gmail.com), Nov 06 2008]
%Y A028563 Cf. A002522.
%Y A028563 Sequence in context: A085248 A092163 A100592 this_sequence A120091 A098944 
               A129958
%Y A028563 Adjacent sequences: A028560 A028561 A028562 this_sequence A028564 A028565 
               A028566
%K A028563 nonn,new
%O A028563 0,2
%A A028563 Patrick De Geest (pdg(AT)worldofnumbers.com)