A138458 a(n) = ((n-th prime)^6-(n-th prime)^4)/24.

2, 27, 625, 4802, 73205, 199927, 1002252, 1954815, 6156502, 24754835, 36940840, 106827177, 197803270, 263247677, 448930652, 923186277, 1757017345, 2146105355, 3768259627, 5336453010, 6304409502, 10127021060, 13620538127

Offset

1,1

Links

Table of n, a(n) for n=1..23.

Mathematica

a = {}; Do[p = Prime[n]; AppendTo[a, (p^6 - p^4)/24], {n, 1, 24}]; a
(#^6-#^4)/24&/@Prime[Range[30]] (* Harvey P. Dale, Apr 27 2018 *)

Prog

(PARI) forprime(p=2, 1e3, print1((p^6-p^4)/24", ")) \\ Charles R Greathouse IV, Jul 15 2011

Crossrefs

Sequence in context: A121137 A203429 A153850 * A090248 A300591 A251693

Adjacent sequences: A138455 A138456 A138457 * A138459 A138460 A138461

Keyword

nonn,easy

Author

Artur Jasinski, Mar 22 2008

Status

approved