id:A055509 - OEIS Search Results

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Number of odd primes in sequence obtained in 3x+1 (or Collatz) problem starting at n.

+0
2

0, 0, 2, 0, 1, 2, 5, 0, 5, 1, 4, 2, 2, 5, 3, 0, 3, 5, 6, 1, 0, 4, 3, 2, 6, 2, 24, 5, 5, 3, 23, 0, 6, 3, 2, 5, 6, 6, 10, 1, 24, 0, 7, 4, 3, 3, 22, 2, 6, 6, 5, 2, 2, 24, 23, 5, 7, 5, 10, 3, 4, 23, 19, 0, 6, 6, 8, 3, 2, 2, 21, 5, 24, 6, 1, 6, 5, 10, 10, 1, 4, 24, 23, 0, 0, 7, 8, 4, 9, 3, 19, 3, 2, 22, 19 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`Eric Weisstein's World of Mathematics, Collatz Problem` `Index entries for sequences related to 3x+1 (or Collatz) problem`
	CROSSREFS	`Cf. A055510.` `Sequence in context: A074704 A025247 A127767 this_sequence A006667 A112570 A127755` `Adjacent sequences: A055506 A055507 A055508 this_sequence A055510 A055511 A055512`
	KEYWORD	`nonn`
	AUTHOR	`G. L. Honaker, Jr. (honak3r(AT)gmail.com), Jun 30 2000`
	EXTENSIONS	`More terms from Larry Reeves (larryr(AT)acm.org), Aug 09 2001`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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