A098116 - OEIS

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A098116

a(n) = 3^(p-1) + (3^p - 1) where p is the n-th prime.

11, 35, 323, 2915, 236195, 2125763, 172186883, 1549681955, 125524238435, 91507169819843, 823564528378595, 600378541187996483, 48630661836227715203, 437675956526049436835, 35451752478610004383715

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

a(1) = 3^(2-1) + 3^2 - 1 = 11.

MATHEMATICA

Table[3^(Prime[n] - 1) + (3^Prime[n] - 1), {n, 1, 20}] (* Stefan Steinerberger, Feb 28 2006 *)

CROSSREFS

Cf. A097743.

Sequence in context: A199817 A216034 A224790 * A217336 A123749 A159493