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Search: id:A087665
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| A087665 |
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Consider recurrence b(0) = n/4, b(n) = b(n-1)*floor(b(n-1)); sequence gives first integer reached, or -1 if no integer is ever reached. |
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+0
2
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OFFSET
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8,1
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COMMENT
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It is conjectured that an integer is always reached if the initial value is >= 2.
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LINKS
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J. C. Lagarias and N. J. A. Sloane, Approximate squaring (pdf, ps), Experimental Math., 13 (2004), 113-128.
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CROSSREFS
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Cf. A087664 (steps to reach an integer), A087667, A087668.
Sequence in context: A077452 A113918 A094048 this_sequence A093481 A132629 A144158
Adjacent sequences: A087662 A087663 A087664 this_sequence A087666 A087667 A087668
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Sep 27 2003
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EXTENSIONS
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The next term is too large to include.
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