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9, 196, 625, 1296, 2209, 3364, 4761, 6400, 8281, 10404, 12769, 15376, 18225, 21316, 24649, 28224, 32041, 36100, 40401, 44944, 49729, 54756, 60025, 65536, 71289, 77284, 83521, 90000, 96721, 103684
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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(0)=9, a(1)=196, a(2)=625, a(n)=3*a(n-1)-3*a(n-2)+a(n-3). - Harvey P. Dale, Nov 02 2013
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MATHEMATICA
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(11Range[0, 30]+3)^2 (* or *) LinearRecurrence[{3, -3, 1}, {9, 196, 625}, 30] (* Harvey P. Dale, Nov 02 2013 *)
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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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