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Search: id:A153057
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| A153057 |
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a(0)=3; a(n)=n^2+a(n-1), n>=0. |
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+0
11
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| 3, 4, 8, 17, 33, 58, 94, 143, 207, 288, 388, 509, 653, 822, 1018, 1243, 1499, 1788, 2112, 2473, 2873, 3314, 3798, 4327, 4903, 5528, 6204, 6933, 7717, 8558, 9458, 10419, 11443, 12532, 13688, 14913, 16209, 17578, 19022, 20543, 22143, 23824, 25588
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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G.f.: (3-8x+10x^2-3x^3)/(1-x)^4. a(n)=3+A000330(n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 17 2009
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MATHEMATICA
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a=3; lst={}; Do[a=n^2+a; AppendTo[lst, a], {n, 0, 5!}]; lst
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CROSSREFS
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Cf. A056520, A153056
Sequence in context: A165438 A049894 A155861 this_sequence A107429 A061273 A107328
Adjacent sequences: A153054 A153055 A153056 this_sequence A153058 A153059 A153060
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 17 2008
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EXTENSIONS
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Added indices to definition. Corrected offset R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 17 2009
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