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A301642 Primes of form 16*k^k + 1. 4

%I #18 Aug 23 2019 14:49:33

%S 17,433,746497,142657607172097

%N Primes of form 16*k^k + 1.

%C The next term is too large to include.

%C The next term (a(5}} has 108 digits; a(6) has 166 digits; a(7) has 170 digits. - _Harvey P. Dale_, Aug 23 2019

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

%t Select[Table[16*k^k+1,{k,20}],PrimeQ] (* _Harvey P. Dale_, Aug 23 2019 *)

%Y Primes of form b*k^k + 1: A121270 (b=1), A216148 (b=2), A301644 (b=3), A301641 (b=4), this sequence (b=16).

%Y Cf. A301522.

%K nonn

%O 1,1

%A _Seiichi Manyama_, Mar 25 2018

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)