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A328217 Numbers k such that k^(k+1)*(k+1)^k + 1 is prime. 0
1, 2, 14, 22, 120 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(6) > 10^3.

Numbers k such that A051443(k)+1 is prime. - Michel Marcus, Oct 08 2019

LINKS

Table of n, a(n) for n=1..5.

MATHEMATICA

Select[Range[120], PrimeQ[#^(# + 1)*(# + 1)^# + 1] &] (* Amiram Eldar, Oct 08 2019 *)

PROG

(MAGMA) [n: n in [1..500] | IsPrime(n^(n+1)*(n+1)^n+1)];

CROSSREFS

Cf. A000040, A051443.

Sequence in context: A190045 A247035 A069512 * A116639 A220274 A036433

Adjacent sequences:  A328214 A328215 A328216 * A328218 A328219 A328220

KEYWORD

nonn,more

AUTHOR

Juri-Stepan Gerasimov, Oct 08 2019

STATUS

approved

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Last modified July 31 20:24 EDT 2021. Contains 346377 sequences. (Running on oeis4.)