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A067201
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Numbers n such that n^2+2 is prime.
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20
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0, 1, 3, 9, 15, 21, 33, 39, 45, 57, 81, 99, 105, 111, 117, 123, 147, 171, 219, 225, 237, 243, 249, 255, 273, 297, 303, 309, 321, 345, 351, 363, 369, 375, 387, 417, 423, 429, 441, 447, 453, 477, 501, 513, 549, 555, 561, 573, 603, 609, 651, 675, 681, 699, 711, 753
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
Eric Weisstein's World of Mathematics, Near-Square Prime
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MATHEMATICA
| lst={}; Do[If[PrimeQ[n^2+2], AppendTo[lst, n]], {n, 3*10^2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 21 2008]
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CROSSREFS
| Equals 6*A056900(n-2) + 3, n>1.
Cf. A106571
Sequence in context: A162843 A102954 A162486 * A071526 A114271 A137164
Adjacent sequences: A067198 A067199 A067200 * A067202 A067203 A067204
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 19 2002
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