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A058777 Numbers n such that n^2*2^n + n*2^((n + 1)/2) + 1 is prime. 0
1, 9, 61, 143, 159, 387, 1137, 1973, 3337, 16895, 37171 (list; graph; refs; listen; history; text; internal format)
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

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Last modified March 23 09:20 EDT 2019. Contains 321424 sequences. (Running on oeis4.)