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A138444 a(n) = ((n-th prime)^6-(n-th prime^2))/5. 2

%I #9 Oct 15 2017 10:21:13

%S 12,144,3120,23520,354288,965328,4827456,9409104,29607072,118964496,

%T 177500544,513145008,950020512,1264272240,2155842624,4432871664,

%U 8436106032,10304074128,18091675536,25620055776,30266844192,48617489856

%N a(n) = ((n-th prime)^6-(n-th prime^2))/5.

%F a(n) = A138409(n)/5. - _R. J. Mathar_, Oct 15 2017

%t a = {}; Do[p = Prime[n]; AppendTo[a, (p^6 - p^2)/5], {n, 1, 50}]; a

%t (#^6-#^2)/5&/@Prime[Range[30]] (* _Harvey P. Dale_, Oct 18 2013 *)

%o (PARI) forprime(p=2,1e3,print1((p^6-p^2)/5", ")) \\ _Charles R Greathouse IV_, Jul 15 2011

%K nonn,easy

%O 1,1

%A _Artur Jasinski_, Mar 19 2008

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Last modified April 23 06:45 EDT 2024. Contains 371906 sequences. (Running on oeis4.)