id:A075102 - OEIS Search Results

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Number of steps to reach the first integer starting with 2^n/n and iterating the map x->x*ceiling(x), or -1 if no integer is ever reached.

+0
4

0, 0, 1, 0, 2, 5, 5, 0, 2, 4, 1, 1, 13, 12, 3, 0 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`The starting value is A075101(n)/A000265(n).`
	LINKS	`J. C. Lagarias and N. J. A. Sloane, Approximate squaring (pdf, ps), Experimental Math., 13 (2004), 113-128.`
	EXAMPLE	`a(5)=2 since (2^5)/5 = 32/5 -> 224/5 -> 2016=A075103(5).`
	CROSSREFS	`Cf. A073524, A068119, A075013.` `Sequence in context: A111364 A128202 A061083 this_sequence A021396 A086283 A101458` `Adjacent sequences: A075099 A075100 A075101 this_sequence A075103 A075104 A075105`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 02 2002`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.