id:A117800 - OEIS Search Results

Search: id:A117800

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Start with 1 and repeatedly reverse the digits and add 5 to get the next term.

+0
9

1, 6, 11, 16, 66, 71, 22, 27, 77, 82, 33, 38, 88, 93, 44, 49, 99, 104, 406, 609, 911, 124, 426, 629, 931, 144, 446, 649, 951, 164, 466, 669, 971, 184, 486, 689, 991, 204, 407, 709, 912, 224, 427, 729, 932, 244, 447, 749, 952, 264, 467, 769, 972, 284, 487, 789, 992, 304, 408 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`N. J. A. Sloane, Table of n, a(n) for n = 0..414 (shows two full cycles)` `N. J. A. Sloane, Sequences of RADD type`
	FORMULA	`After 1 step enters a cycle of length 207.` `It appears that there is a unique cycle of length 207 for the reverse-and-add-5 problem. Klaus Brockhaus has done an extensive search without finding any further cycle of length 207. There are many cycles of lengths 36 and 756. See A118878.`
	CROSSREFS	`Cf. A117828, A118878, A118879.` `Sequence in context: A140527 A024730 A024952 this_sequence A118847 A111256 A001964` `Adjacent sequences: A117797 A117798 A117799 this_sequence A117801 A117802 A117803`
	KEYWORD	`nonn,base`
	AUTHOR	`njas, following discussions with Luc Stevens, May 04 2006`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research