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A092363
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n^(1/a(n)) is the closest to an integer on 2..n with a(n) minimal.
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0
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2, 2, 2, 2, 3, 3, 3, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 2, 2, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 2, 5, 5, 5, 5, 41, 42, 43, 44, 45, 46, 47, 2, 2, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,1
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COMMENTS
| The sequence is conjectured to tend to n, as n^(1/n)->1. Is the density of nonnegative entries 0?
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EXAMPLE
| 5^(1/2)= 2.236067977499789696409173668
5^(1/3)= 1.709975946676696989353108872
5^(1/4)= 1.495348781221220541911898994
5^(1/5)= 1.379729661461214832390063464
5^(1/2) is closest to an integer, so a(5)=2.
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PROG
| (PARI) { for (i=2, 100, xj=1; xm=0.5; for (j=2, i, x=i^(1/j)*1.0; xf=x-floor(x); if (xf<xm, xm=xf; xj=j); if (1-xf<xm, xm=1-xf; xj=j)); print1(", "xj)) }
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CROSSREFS
| Sequence in context: A120425 A104186 A184320 * A133874 A053384 A186313
Adjacent sequences: A092360 A092361 A092362 * A092364 A092365 A092366
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KEYWORD
| nonn
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AUTHOR
| Jon Perry (perry(AT)globalnet.co.uk), Mar 19 2004
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