A138428 a(n) = (prime(n)^5 - prime(n))/10.

3, 24, 312, 1680, 16104, 37128, 141984, 247608, 643632, 2051112, 2862912, 6934392, 11585616, 14700840, 22934496, 41819544, 71492424, 84459624, 135012504, 180422928, 207307152, 307705632, 393904056, 558405936, 858734016, 1051010040

Offset: 1

Author

Artur Jasinski, Mar 19 2008

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..200

Programs

Magma

[(NthPrime((n))^5 - NthPrime((n)))/10: n in [1..30]]; // Vincenzo Librandi, Jun 18 2011

Mathematica

a = {}; Do[p = Prime[n]; AppendTo[a, (p^5 - p)/10], {n, 1, 50}]; a
(#^5-#)/10&/@Prime[Range[30]] (* Harvey P. Dale, Dec 18 2014 *)

PARI

forprime(p=2,1e3,print1((p^5-p)/10", ")) \\ Charles R Greathouse IV, Jul 15 2011

Formula

a(n) = A138404(n)/10. - R. J. Mathar, Oct 15 2017