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A017306
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a(n) = (10*n + 3)^2.
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1
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9, 169, 529, 1089, 1849, 2809, 3969, 5329, 6889, 8649, 10609, 12769, 15129, 17689, 20449, 23409, 26569, 29929, 33489, 37249, 41209, 45369, 49729, 54289, 59049, 64009, 69169, 74529, 80089, 85849
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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G.f.: -(9 + 142*x + 49*x^2)/(x-1)^3. - R. J. Mathar, Mar 20 2018
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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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