A058777 Numbers n such that n^2*2^n + n*2^((n + 1)/2) + 1 is prime.

1, 9, 61, 143, 159, 387, 1137, 1973, 3337, 16895, 37171

Offset

1,2

References

Posting to NMBRTHRY(AT)LISTSERV.NODAK.EDU by Mike Oakes Dec 30 2000 entitled "Gaussian analogues of the Cullen and Woodall primes."

Links

Table of n, a(n) for n=1..11.

Index entries for Gaussian integers and primes

Mathematica

Do[ If[ PrimeQ[ n^2*2^n + n*2^((n + 1)/2) + 1], Print[n] ], {n, 1, 50000} ]

Prog

(PARI) is(n)=ispseudoprime(n^2*2^n+n*2^((n+1)/2)+1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A213133 A159037 A138589 * A030507 A172208 A202660

Adjacent sequences: A058774 A058775 A058776 * A058778 A058779 A058780

Keyword

nonn

Author

Robert G. Wilson v, Jan 02 2001

Status

approved