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A084541 Numbers n such that 4^n + 9i is a Gaussian Prime. 0
1, 2, 3, 4, 7, 8, 14, 16, 24, 32, 62, 68, 77, 88, 138, 162, 164, 183, 321, 333, 502, 1613 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No more under 2000.

LINKS

Table of n, a(n) for n=1..22.

MATHEMATICA

Flatten[Position[Table[PrimeQ[4^n + 9 I], {n, 1, 2000}], True]]

CROSSREFS

Sequence in context: A202116 A215914 A006049 * A240690 A113050 A278180

Adjacent sequences:  A084538 A084539 A084540 * A084542 A084543 A084544

KEYWORD

hard,nonn

AUTHOR

Ed Pegg Jr, May 29 2003

STATUS

approved

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Last modified November 19 00:12 EST 2019. Contains 329310 sequences. (Running on oeis4.)