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A138422
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a(n) = (prime(n)^4 - prime(n)^2)/12.
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3
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1, 6, 50, 196, 1210, 2366, 6936, 10830, 23276, 58870, 76880, 156066, 235340, 284746, 406456, 657306, 1009490, 1153510, 1678886, 2117220, 2366076, 3245320, 3954286, 5227860, 7376656, 8670850, 9378356, 10922346, 11762190, 13586216, 21677376
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OFFSET
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1,2
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..200
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FORMULA
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a(n) = A138402(n)/12. - R. J. Mathar, Oct 15 2017
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MATHEMATICA
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a = {}; Do[p = Prime[n]; AppendTo[a, (p^4 - p^2)/12], {n, 1, 50}]; a
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PROG
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(Magma) [(NthPrime((n))^4 - NthPrime((n))^2)/12: n in [1..40] ]; // Vincenzo Librandi, Jun 17 2011
(PARI) forprime(p=2, 1e3, print1((p^4-p^2)/12", ")) \\ Charles R Greathouse IV, Jul 15 2011
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CROSSREFS
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Sequence in context: A231270 A062801 A035290 * A356251 A001303 A220887
Adjacent sequences: A138419 A138420 A138421 * A138423 A138424 A138425
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KEYWORD
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nonn,easy
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AUTHOR
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Artur Jasinski, Mar 19 2008
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STATUS
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approved
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