A187602 -id:A187602 - cp's OEIS frontend

1, 2, 3, 5, 7, 8, 158, 536, 4670, 9795

Offset: 1

Matevz Markovic, Feb 25 2014

Next term is >= 30000.

			3 is in the sequence since (3+1)^(3-1) + 3 = 4^2 + 3 = 19 is prime.

Cf. A187602 (corresponding primes).

Select[Range[600],PrimeQ[(#+1)^(#-1)+#]&] (* The program generates the first eight terms of the sequence. *) (* Harvey P. Dale, Feb 07 2024 *)

is(n)=isprime((n+1)^(n-1)+n) \\ Charles R Greathouse IV, Jun 06 2017

83, 15629, 279941, 3486784409, 6568408355712890639

Offset: 1

Soumadeep Ghosh, Feb 16 2016

The next prime has 171 digits. - Vincenzo Librandi, Feb 17 2016

Subsequence of primes of A155499. - Michel Marcus, Feb 20 2016

Cf. A309140 (the corresponding values of k).

[a: n in [0..100] | IsPrime(a) where a is n^(n+1)+n-1]; // Vincenzo Librandi, Feb 17 2016

Select[Table[n^(n + 1) + n - 1, {n, 1, 50}], ProvablePrimeQ[#] &]

lista(nn) = for(k=1, nn, if(ispseudoprime(q=k^(k+1)+k-1), print1(q, ", "))); \\ Jinyuan Wang, Mar 01 2020

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