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Search: id:A140719
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| A140719 |
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Primes of form n^3-(n+1)^2. |
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+0
5
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| 11, 89, 167, 431, 1187, 1559, 3119, 5471, 7559, 18899, 34781, 41579, 57719, 67157, 89009, 108191, 122399, 154439, 270269, 283007, 309671, 628487, 650759, 770039, 875327, 960299, 1213379, 1547207, 1800719, 1845491, 1984247, 2608751, 2724119
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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3^3-4^2=27-16=11, 5^3-6^2=125-36=89, 6^3-7^2=216-49=167,...
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MATHEMATICA
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a={}; Do[p=n^3-(n+1)^2; If[PrimeQ[p], AppendTo[a, p]], {n, 2, 140}]; a - Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008
Select[ #^3 - (# + 1)^2 & /@ Range[2, 140], PrimeQ@ # &] (* RGWv *) - Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008
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CROSSREFS
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Sequence in context: A037706 A162576 A142166 this_sequence A128448 A121155 A081657
Adjacent sequences: A140716 A140717 A140718 this_sequence A140720 A140721 A140722
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 11 2008
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 17 2008
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