Search: id:A028563 Results 1-1 of 1 results found. %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, Palindromic Quasipronics of the form n(n+x) %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) Search completed in 0.001 seconds