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Search: id:A059774
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| A059774 |
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Consider the line segment in R^n from the origin to the point P=(1,2,3,...,n); let d = squared distance to this line from the closest point of Z^n (excluding the endpoints). Sequence gives d times P.P. |
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+0
3
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| 1, 3, 9, 21, 40, 75, 120, 189, 285, 385, 506, 650, 819, 1015, 1240, 1496, 1785, 2109, 2470, 2870, 3311, 3795, 4324, 4900, 5525, 6201, 6930, 7714, 8555, 9455, 10416, 11440, 12529, 13685, 14910, 16206, 17575, 19019, 20540, 22140, 23821, 25585, 27434, 29370
(list; graph; listen)
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OFFSET
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2,2
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COMMENT
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P.P is given by A000330(n). For n >= 10, a(n) = A000330(n-1).
Officially these are just conjectures so far.
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REFERENCES
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N. J. A. Sloane and V. Vaishampayan, in preparation, 2001.
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CROSSREFS
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Cf. A000330, A059804, A047896.
Sequence in context: A112039 A007518 A029494 this_sequence A064999 A100135 A024173
Adjacent sequences: A059771 A059772 A059773 this_sequence A059775 A059776 A059777
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KEYWORD
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nonn,easy,nice
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AUTHOR
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njas and Vinay Vaishampayan (vinay(AT)research.att.com), Feb 21, 2001
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