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 A138423 a(n) = (prime(n)^4 - prime(n)^3)/2. 3
 4, 27, 250, 1029, 6655, 13182, 39304, 61731, 133837, 341446, 446865, 911754, 1378420, 1669647, 2387929, 3870802, 5955991, 6809430, 9925179, 12526885, 14004612, 19228521, 23443267, 31018636, 43808304, 51515050, 55729077 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..200 FORMULA a(n) = A138403(n)/2. - R. J. Mathar, Oct 15 2017 MATHEMATICA a = {}; Do[p = Prime[n]; AppendTo[a, (p^4 - p^3)/2], {n, 1, 50}]; a PROG (MAGMA) [(NthPrime((n))^4 - NthPrime((n))^3)/2: n in [1..30] ]; // Vincenzo Librandi, Jun 18 2011 (PARI) forprime(p=2, 1e3, print1((p^4-p^3)/2", ")) \\ Charles R Greathouse IV, Jul 15 2011 CROSSREFS Sequence in context: A229619 A051863 A000699 * A239372 A239375 A239370 Adjacent sequences:  A138420 A138421 A138422 * A138424 A138425 A138426 KEYWORD nonn,easy AUTHOR Artur Jasinski, Mar 19 2008 STATUS approved

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Last modified April 10 08:09 EDT 2021. Contains 342845 sequences. (Running on oeis4.)