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A138440 a(n) = ((n-th prime)^6-(n-th prime))/2. 2
31, 363, 7810, 58821, 885775, 2413398, 12068776, 23522931, 74017933, 297411646, 443751825, 1282863186, 2375052100, 3160681503, 5389607641, 11082180538, 21090266791, 25760187150, 45229191051, 64050141925, 75667113108 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

FORMULA

a(n) = A138408(n)/2. - R. J. Mathar, Oct 15 2017

MATHEMATICA

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

PROG

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

CROSSREFS

Sequence in context: A261759 A156150 A125419 * A307008 A161347 A107941

Adjacent sequences:  A138437 A138438 A138439 * A138441 A138442 A138443

KEYWORD

nonn,easy

AUTHOR

Artur Jasinski, Mar 19 2008

STATUS

approved

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Last modified October 18 23:35 EDT 2021. Contains 348071 sequences. (Running on oeis4.)