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A301642
Primes of form 16*k^k + 1.
4
17, 433, 746497, 142657607172097
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
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: A167474 A158063 A370543 * A035022 A375891 A012117
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Mar 25 2018
STATUS
approved