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Search: id:A027688
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| 3, 5, 9, 15, 23, 33, 45, 59, 75, 93, 113, 135, 159, 185, 213, 243, 275, 309, 345, 383, 423, 465, 509, 555, 603, 653, 705, 759, 815, 873, 933, 995, 1059, 1125, 1193, 1263, 1335, 1409, 1485, 1563, 1643, 1725, 1809, 1895, 1983, 2073, 2165, 2259
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Except for the first term, a(n)=2*n+a(n-1), (with a(1)=5) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Oct 23 2009]
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LINKS
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P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)
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MAPLE
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with (combinat):seq(fibonacci(3, n)+n+2, n=0..47); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 07 2008
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MATHEMATICA
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lst={}; a=3; Do[a=2*n+a; AppendTo[lst, a], {n, 0, 5!}]; lst...and/or... lst={}; Do[a=n^2+n+3; AppendTo[lst, a], {n, 0, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 01 2008]
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CROSSREFS
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Cf. A002522.
Adjacent sequences: A027685 A027686 A027687 this_sequence A027689 A027690 A027691
Sequence in context: A095039 A022940 A025207 this_sequence A118403 A033498 A147493
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KEYWORD
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nonn,new
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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EXTENSIONS
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Definition and offset fixed by Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Jul 06 2009
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