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Search: id:A121617
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| A121617 |
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Indices n such that Nexus numbers of order 5 (or A022521[n-1] = n^5 - (n-1)^5) are primes. |
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3
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| 2, 3, 6, 11, 17, 20, 25, 28, 31, 32, 35, 36, 42, 45, 47, 55, 58, 65, 67, 76, 79, 86, 88, 89, 100
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Corresponding Nexus Primes of order 5 (or primes of form n^5 - (n-1)^5 = A022521[n-1]) are listed in A121616[n] = {31,211,4651,61051,371281,723901,1803001,2861461,...}.
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MAPLE
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Do[np5=n^5 - (n-1)^5; If[PrimeQ[np5], Print[n]], {n, 1, 100}]
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CROSSREFS
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Cf. A022521, A121616, A121618, A121619, A121620.
Sequence in context: A138520 A138519 A049794 this_sequence A157656 A059100 A131512
Adjacent sequences: A121614 A121615 A121616 this_sequence A121618 A121619 A121620
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KEYWORD
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nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Aug 10 2006
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