A138445 a(n) = ((n-th prime)^6-(n-th prime^2))/6.

10, 120, 2600, 19600, 295240, 804440, 4022880, 7840920, 24672560, 99137080, 147917120, 427620840, 791683760, 1053560200, 1796535520, 3694059720, 7030088360, 8586728440, 15076396280, 21350046480, 25222370160, 40514574880

Offset

1,1

Links

Table of n, a(n) for n=1..22.

Formula

a(n) = A138409(n)/6. - R. J. Mathar, Oct 15 2017

Mathematica

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

Prog

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

Crossrefs

Sequence in context: A051582 A122420 A069671 * A138496 A111482 A095870

Adjacent sequences: A138442 A138443 A138444 * A138446 A138447 A138448

Keyword

nonn,easy

Author

Artur Jasinski, Mar 19 2008

Status

approved