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A058771
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Numbers k such that k * (1+i)^k - 1 is a Gaussian prime.
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0
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2, 4, 8, 12, 25, 30, 47, 52, 61, 100, 108, 142, 150, 167, 198, 387, 407, 648, 782, 858, 1973, 2940, 2964, 3638, 4433, 4921, 14072, 27192, 37171, 41604, 48470, 72780
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OFFSET
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1,1
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COMMENTS
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Apparently uses a non-standard definition of a Gaussian prime. Let k*(1+i)^k-1 = a+b*i, then k is in this sequence if a+b*i is a Gaussian prime or b=0 and abs(a) is an ordinary prime. - Sean A. Irvine, Aug 13 2022
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LINKS
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MATHEMATICA
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Do[ If[ PrimeQ[ n * (1 + I)^n - 1], Print[n] ], {n, 1, 5000} ]
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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