A058767 Numbers k such that k*2^(k/2) + 1 is prime.

2, 4, 12, 52, 100, 108, 160, 2940, 2964, 17334, 21768, 41604, 65208, 72780

Offset

1,1

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..14.

Index entries for Gaussian integers and primes

Mathematica

Do[ If[ PrimeQ[ n*2^(n/2) + 1 ], Print[n] ], {n, 1, 100000} ]

Crossrefs

Sequence in context: A030887 A030924 A030831 * A075876 A222470 A372347

Adjacent sequences: A058764 A058765 A058766 * A058768 A058769 A058770

Keyword

nonn

Author

Robert G. Wilson v, Jan 02 2001

Extensions

Name corrected to match terms by Sean A. Irvine, Aug 13 2022

Status

approved