A008883 - OEIS

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A008883

3x+1 sequence starting at 51.

51, 154, 77, 232, 116, 58, 29, 88, 44, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	REFERENCES	`R. K. Guy, Unsolved Problems in Number Theory, E16.`
	LINKS	`Index entries for sequences related to 3x+1 (or Collatz) problem`
	MAPLE	`f := proc(n) option remember; if n = 0 then 51; elif f(n-1) mod 2 = 0 then f(n-1)/2 else 3*f(n-1)+1; fi; end;`
	CROSSREFS	`Sequence in context: A044683 A044383 A044764 * A069762 A031431 A157365` `Adjacent sequences: A008880 A008881 A008882 * A008884 A008885 A008886`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 23:34 EST 2012. Contains 205860 sequences.