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A138431 a(n) = ((n-th prime)^5-(n-th prime)^2)/2. 2
14, 117, 1550, 8379, 80465, 185562, 709784, 1237869, 3217907, 10255154, 14314095, 34671294, 57927260, 73503297, 114671399, 209096342, 357460409, 422296290, 675060309, 902112155, 1036533132, 1538525079, 1969516877, 2792025764 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..24.

FORMULA

a(n) = A138405(n)/2. - R. J. Mathar, Oct 15 2017

MATHEMATICA

a = {}; Do[p = Prime[n]; AppendTo[a, (p^5 - p^2)/2], {n, 1, 50}]; a

PROG

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

CROSSREFS

Sequence in context: A155647 A279855 A128569 * A175874 A006223 A091303

Adjacent sequences:  A138428 A138429 A138430 * A138432 A138433 A138434

KEYWORD

nonn,easy

AUTHOR

Artur Jasinski, Mar 19 2008

STATUS

approved

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Last modified December 4 04:22 EST 2020. Contains 338921 sequences. (Running on oeis4.)