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A211409
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Numbers n such that (9^n + 4^n)/13 is prime.
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1
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3, 5, 7, 11, 17, 19, 41, 53, 109, 167, 2207, 3623, 5059, 5471, 7949, 21211, 32993, 60251
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OFFSET
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1,1
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COMMENTS
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All terms are prime.
The next element, a(19), is greater than 10^5.
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LINKS
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MATHEMATICA
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Select[ Prime[ Range[1, 100000] ], PrimeQ[ (9^# + 4^#)/13 ]& ]
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PROG
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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STATUS
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approved
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