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A138430
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a(n) = (prime(n)^5 - prime(n))/30.
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4
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1, 8, 104, 560, 5368, 12376, 47328, 82536, 214544, 683704, 954304, 2311464, 3861872, 4900280, 7644832, 13939848, 23830808, 28153208, 45004168, 60140976, 69102384, 102568544, 131301352, 186135312, 286244672, 350336680, 386424688, 467517240, 512874648
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OFFSET
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1,2
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COMMENTS
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a(n) = Sum_{i+j=p} (i^2)*(j^2) where p = prime(n). - Michel Lagneau, May 21 2012
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LINKS
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FORMULA
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MATHEMATICA
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Table[p = Prime[n]; (p^5 - p)/30, {n, 50}]
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PROG
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(Magma) [(NthPrime((n))^5 - NthPrime((n)))/30: n in [1..30]]; // Vincenzo Librandi, Jun 18 2011
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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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