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A301642 Primes of form 16*k^k + 1. 4
17, 433, 746497, 142657607172097 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 1 00:27 EDT 2020. Contains 334756 sequences. (Running on oeis4.)