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A017354
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a(n) = (10*n + 7)^2.
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2
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49, 289, 729, 1369, 2209, 3249, 4489, 5929, 7569, 9409, 11449, 13689, 16129, 18769, 21609, 24649, 27889, 31329, 34969, 38809, 42849, 47089, 51529, 56169, 61009, 66049, 71289, 76729, 82369, 88209
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = 40*A000566(n+1) + 9. - Ken Rosenbaum, Dec 02 2009
G.f.: ( -49-142*x-9*x^2 ) / (x-1)^3. - R. J. Mathar, Mar 21 2016
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MATHEMATICA
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Table[(10n+7)^2, {n, 0, 24}]
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PROG
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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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