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Search: id:A113536
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| A113536 |
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Numbers n such that n^2 + k is prime, k=13 case. |
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+0
1
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| 2, 4, 10, 12, 16, 18, 28, 40, 42, 44, 46, 60, 68, 72, 82, 84, 88, 94, 108, 110, 114, 116, 122, 126, 142, 144, 152, 158, 180, 192, 194, 198, 200, 220, 222, 264, 266, 268, 282, 284, 296, 298, 332, 336, 340, 354, 378, 380, 418, 420, 430, 434, 446, 464, 466, 486
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Other cases: A005574 k=1, A067201 k=2, A049422 k=3, A007591 k=4, A078402 k=5, A114269 - A114275 k=6-12.
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MATHEMATICA
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With[{k=13}, Select[Range[1000], PrimeQ[ #^2+k]&]]
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CROSSREFS
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Cf. A005574, A067201, A049422, A007591, A078402, A114269, A114270, A114271, A114272, A114273, A114274, A114275.
Sequence in context: A138940 A129412 A121926 this_sequence A081887 A085344 A047463
Adjacent sequences: A113533 A113534 A113535 this_sequence A113537 A113538 A113539
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Jan 13 2006
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