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A138436 a(n) = ((n-th prime)^5-(n-th prime)^3)/8. 2
3, 27, 375, 2058, 19965, 46137, 176868, 308655, 803022, 2560845, 3574920, 8661663, 14473410, 18366117, 28655148, 52255827, 89339865, 105546165, 168728043, 225483930, 259085322, 384570420, 492308607, 697919310, 1073303448 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

FORMULA

a(n) = A138406(n)/8. - R. J. Mathar, Oct 15 2017

MATHEMATICA

a = {}; Do[p = Prime[n]; AppendTo[a, (p^5 - p^3)/8], {n, 1, 50}]; a

PROG

(PARI) forprime(p=2, 1e3, print1((p^5-p^3)/8", ")) \\ Charles R Greathouse IV, Jul 15 2011

CROSSREFS

Sequence in context: A168593 A328182 A157089 * A141057 A201696 A011781

Adjacent sequences:  A138433 A138434 A138435 * A138437 A138438 A138439

KEYWORD

nonn,easy

AUTHOR

Artur Jasinski, Mar 19 2008

STATUS

approved

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Last modified October 18 06:50 EDT 2021. Contains 348066 sequences. (Running on oeis4.)