Search: a128349 -id:a128349
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A128336
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Numbers k such that (6^k + 5^k)/11 is prime.
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+10
26
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A128347
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Numbers k such that (11^k - 5^k)/6 is prime.
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+10
26
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A128342
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Numbers k such that (13^k + 5^k)/18 is prime.
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+10
23
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13, 19, 31, 359, 487, 757, 761, 1667, 2551, 3167, 6829
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A128341
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Numbers k such that (12^k + 5^k)/17 is prime.
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+10
22
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A128344
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Numbers k such that (7^k - 5^k)/2 is prime.
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+10
22
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3, 5, 7, 113, 397, 577, 7573, 14561, 58543, 100019, 123407, 136559, 208283, 210761, 457871, 608347, 636043
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A128339
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Numbers k such that (9^k + 5^k)/14 is prime.
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+10
21
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3, 5, 13, 17, 43, 127, 229, 277, 6043, 11131, 11821
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A128340
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Numbers k such that (11^k + 5^k)/16 is prime.
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+10
20
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A128346
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Numbers k such that (9^k - 5^k)/4 is prime.
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+10
20
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A128348
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Numbers k such that (12^k - 5^k)/7 is prime.
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+10
20
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A128337
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Numbers k such that (7^k + 5^k)/12 is prime.
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+10
19
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11, 31, 173, 271, 547, 1823, 2111, 5519, 7793, 22963, 41077, 49739
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