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A028881 n^2 - 7. +0
2
2, 9, 18, 29, 42, 57, 74, 93, 114, 137, 162, 189, 218, 249, 282, 317, 354, 393, 434, 477, 522, 569, 618, 669, 722, 777, 834, 893, 954, 1017, 1082, 1149, 1218, 1289, 1362, 1437, 1514, 1593, 1674, 1757, 1842, 1929, 2018, 2109, 2202, 2297, 2394 (list; graph; listen)
OFFSET

3,1

LINKS

P. De Geest, Palindromic Quasipronics of the form n(n+x)

MATHEMATICA

s=0; lst={}; Do[s+=n; If[(s-7)>0, AppendTo[lst, s-7]], {n, 1, 6!, 2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 25 2009]

PROGRAM

(Other) SAGE:[lucas_number2(2, n, 3-n) for n in xrange(2, 49)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 12 2009]

CROSSREFS

Adjacent sequences: A028878 A028879 A028880 this_sequence A028882 A028883 A028884

Sequence in context: A126082 A083707 A103256 this_sequence A083708 A037421 A083423

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified November 3 12:59 EST 2009. Contains 165766 sequences.


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