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Search: id:A005145
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| A005145 |
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n copies of n-th prime. |
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+0
1
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| 2, 3, 3, 5, 5, 5, 7, 7, 7, 7, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 23, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a = A000040(A002024) - Joseph Biberstine (jrbibers(AT)indiana.edu), Aug 14 2006
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REFERENCES
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Douglas Hofstadter, "Fluid Concepts and Creative Analogies: Computer Models of the Fundamental Mechanisms of Thought".
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FORMULA
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a(n) = Prime[Floor[1/2 + Sqrt[2*n]]] - Joseph Biberstine (jrbibers(AT)indiana.edu), Aug 14 2006
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MATHEMATICA
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Table[Prime[Floor[1/2 + Sqrt[2*n]]], {n, 1, 80}] - Joseph Biberstine (jrbibers(AT)indiana.edu), Aug 14 2006
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CROSSREFS
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Cf. A002024.
Adjacent sequences: A005142 A005143 A005144 this_sequence A005146 A005147 A005148
Sequence in context: A130149 A053046 A066658 this_sequence A076367 A098567 A086162
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KEYWORD
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nonn,nice
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AUTHOR
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Russ Cox (rsc(AT)swtch.com)
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