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A032526
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a(n) = floor(5*n^2/2).
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1
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0, 2, 10, 22, 40, 62, 90, 122, 160, 202, 250, 302, 360, 422, 490, 562, 640, 722, 810, 902, 1000, 1102, 1210, 1322, 1440, 1562, 1690, 1822, 1960, 2102, 2250, 2402, 2560, 2722, 2890, 3062, 3240, 3422, 3610, 3802, 4000, 4202, 4410, 4622, 4840, 5062
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OFFSET
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0,2
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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LinearRecurrence[{2, 0, -2, 1}, {0, 2, 10, 22}, 50] (* Harvey P. Dale, Dec 14 2016 *)
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PROG
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(Magma) [Floor(5*n^2/2): n in [0..50]]; // Bruno Berselli, Jun 14 2013
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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