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A102908 Primes of the form 3^n+3^4+1. 1
109, 163, 811, 2269, 31381059691, 22876792455043, 4052555153018976349, 7395104114874202511988394360121831439224179537192802989, 507528786056415600719754159741696356908742250191663887263627442114963 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The following terms are too large to be displayed here, but the exponents n can be found in sequence A168170. [M. F. Hasler, Nov 25 2009]

LINKS

Table of n, a(n) for n=1..9.

FORMULA

a(n) = 3^A168170(n)+3^4+1. [M. F. Hasler, Nov 25 2009]

MATHEMATICA

a = Delete[Union[Flatten[Table[If [PrimeQ[3^n + 3^4 + 1] == True, 3^n + 3^4 + 1, 0], {n, 1, 200}]]], 1]

Select[3^Range[150]+82, PrimeQ] (* Harvey P. Dale, Dec 18 2011 *)

CROSSREFS

Sequence in context: A161483 A283792 A141948 * A141998 A061277 A142945

Adjacent sequences:  A102905 A102906 A102907 * A102909 A102910 A102911

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Mar 01 2005

EXTENSIONS

Edited by M. F. Hasler, Nov 25 2009

STATUS

approved

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Last modified March 19 23:02 EDT 2019. Contains 321343 sequences. (Running on oeis4.)