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A095829
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Numbers n such that n^(n+2) + (n+1)^(n+3) is prime.
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0
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1, 3, 5, 6, 9, 21, 24, 35, 84, 396, 1585
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OFFSET
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1,2
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COMMENTS
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a(1) through a(9) have been proved to be prime. 396^398 + 397^399 is Fermat and Lucas PRP. 1585^1587 + 1586^1588 is 3-PRP. No more terms up to 2150.
Results were computed using the PrimeFormGW (PFGW) primality-testing program. - Hugo Pfoertner, Nov 14 2019
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LINKS
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EXAMPLE
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a(5)=9 because 9^11 + 10^12 = 1031381059609 is prime.
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PROG
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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STATUS
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approved
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