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Search: id:A154113
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| A154113 |
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Primes of the form : (n+1)^3-n^2. |
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+0
2
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| 7, 23, 109, 191, 307, 463, 919, 1231, 1607, 2053, 4657, 7639, 8861, 34913, 41719, 53503, 77743, 89189, 95311, 122599, 138007, 146173, 182057, 223381, 246203, 353011, 383833, 416399, 433351, 468623, 505759, 544807, 721079, 745471, 875711
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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2^3-1^2=7, 3^3-2^2=23, ...
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MATHEMATICA
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a[n_]:=(n+1)^3-n^2; lst={}; Do[If[PrimeQ[a[n]], AppendTo[lst, a[n]]], {n, 6!}]; lst
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CROSSREFS
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Cf. A140719, A005097, A154111, A154112
Sequence in context: A003540 A063793 A096327 this_sequence A053706 A137367 A064640
Adjacent sequences: A154110 A154111 A154112 this_sequence A154114 A154115 A154116
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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), Jan 04 2009
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