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A138418
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a(n) = ((n-th prime)^4-(n-th prime)^2)/2.
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3
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6, 36, 300, 1176, 7260, 14196, 41616, 64980, 139656, 353220, 461280, 936396, 1412040, 1708476, 2438736, 3943836, 6056940, 6921060, 10073316, 12703320, 14196456, 19471920, 23725716, 31367160, 44259936, 52025100, 56270136
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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a = {}; Do[p = Prime[n]; AppendTo[a, (p^4 - p^2)/2], {n, 1, 50}]; a
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PROG
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(Magma) [(NthPrime((n))^4 - NthPrime((n))^2)/2: n in [1..30] ]; // Vincenzo Librandi, Jun 17 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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