

A301642


Primes of form 16*k^k + 1.


4




OFFSET

1,1


COMMENTS

The next term is too large to include.
The next term (a(5}} has 108 digits; a(6) has 166 digits; a(7) has 170 digits.  Harvey P. Dale, Aug 23 2019


LINKS

Table of n, a(n) for n=1..4.


FORMULA

a(n) = 16*A301522(n+1)^A301522(n+1) + 1.


MATHEMATICA

Select[Table[16*k^k+1, {k, 20}], PrimeQ] (* Harvey P. Dale, Aug 23 2019 *)


CROSSREFS

Primes of form b*k^k + 1: A121270 (b=1), A216148 (b=2), A301644 (b=3), A301641 (b=4), this sequence (b=16).
Cf. A301522.
Sequence in context: A222648 A167474 A158063 * A035022 A012117 A271438
Adjacent sequences: A301639 A301640 A301641 * A301643 A301644 A301645


KEYWORD

nonn


AUTHOR

Seiichi Manyama, Mar 25 2018


STATUS

approved



