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URL: https://oeis.org/A301520

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A301520
Numbers k such that 4*k^k + 3 is prime.
5
0, 1, 2, 5, 10, 44, 65, 1424
OFFSET
1,3
COMMENTS
Next term, if it exists, is greater than 5000. - Vaclav Kotesovec, Mar 25 2018
Next term, if it exists, is greater than 25000. - Robert Price, Apr 22 2019
MATHEMATICA
Flatten[{0, Select[Range[1000], PrimeQ[4*#^# + 3] &]}] (* Vaclav Kotesovec, Mar 25 2018 *)
PROG
(PARI) for(n=0, 100, if(isprime(4*n^n+3), print1(n", ")))
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Seiichi Manyama, Mar 23 2018
EXTENSIONS
a(8) from Vaclav Kotesovec, Mar 25 2018
STATUS
approved