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A301644
Primes of form 3*k^k + 1.
4
13, 769, 139969, 30000000001
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OFFSET
1,1
COMMENTS
The next term is too large to include.
The next term (a(5)) has 703 digits. -
Harvey P. Dale
, Sep 04 2018
LINKS
Table of n, a(n) for n=1..4.
FORMULA
a(n) = 3*(2*
A160600
(n))^(2*
A160600
(n)) + 1.
MATHEMATICA
Select[Table[3*k^k+1, {k, 500}], PrimeQ] (*
Harvey P. Dale
, Sep 04 2018 *)
CROSSREFS
Primes of form b*k^k + 1:
A121270
(b=1),
A216148
(b=2), this sequence (b=3),
A301641
(b=4),
A301642
(b=16).
Cf.
A160600
.
Sequence in context:
A086157
A033509
A262099
*
A182932
A221934
A328033
Adjacent sequences:
A301641
A301642
A301643
*
A301645
A301646
A301647
KEYWORD
nonn
AUTHOR
Seiichi Manyama
, Mar 25 2018
STATUS
approved
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Last modified September 2 15:48 EDT 2024. Contains 375613 sequences. (Running on oeis4.)