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A135484 a(n) = Sum_{i=1..n} i^prime(i), where prime(i) denotes i-th prime number. 2
1, 9, 252, 16636, 48844761, 13109538777, 232643623525984, 144347831699381856, 8863082467484200477785, 100000008863082467484200477785, 192043424966613562971631041769596 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..75

MATHEMATICA

f[n_] := Sum[i^Prime@i, {i, n}]; Array[f, 12] (* Robert G. Wilson v, Feb 12 2008 *)

PROG

(PARI) a(n) = sum(k=1, n, k^prime(k)); \\ Michel Marcus, Oct 15 2016

CROSSREFS

Cf. A000040, A087480.

Sequence in context: A194790 A158621 A256019 * A178186 A212290 A296950

Adjacent sequences:  A135481 A135482 A135483 * A135485 A135486 A135487

KEYWORD

nonn

AUTHOR

Ctibor O. Zizka, Feb 07 2008

EXTENSIONS

Edited and extended by Robert G. Wilson v, Feb 12 2008

STATUS

approved

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Last modified June 19 16:48 EDT 2019. Contains 324222 sequences. (Running on oeis4.)