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A138443 a(n) = ((n-th prime)^6-(n-th prime^2))/4. 2
15, 180, 3900, 29400, 442860, 1206660, 6034320, 11761380, 37008840, 148705620, 221875680, 641431260, 1187525640, 1580340300, 2694803280, 5541089580, 10545132540, 12880092660, 22614594420, 32025069720, 37833555240 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..21.

FORMULA

a(n) = A138409(n)/4. - R. J. Mathar, Oct 15 2017

MATHEMATICA

a = {}; Do[p = Prime[n]; AppendTo[a, (p^6 - p^2)/4], {n, 1, 50}]; a

PROG

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

CROSSREFS

Sequence in context: A004992 A055084 A005461 * A235455 A016158 A193701

Adjacent sequences:  A138440 A138441 A138442 * A138444 A138445 A138446

KEYWORD

nonn,easy

AUTHOR

Artur Jasinski, Mar 19 2008

STATUS

approved

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Last modified October 13 20:38 EDT 2019. Contains 327981 sequences. (Running on oeis4.)