A060140 - OEIS

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A060140

Ordered set S defined by these rules: 0 and 1 are in S and if x is a nonzero number in S, then 3x and 9x+1 are in S.

0, 1, 3, 9, 10, 27, 28, 30, 81, 82, 84, 90, 91, 243, 244, 246, 252, 253, 270, 271, 273, 729, 730, 732, 738, 739, 756, 757, 759, 810, 811, 813, 819, 820, 2187, 2188, 2190, 2196, 2197, 2214, 2215, 2217, 2268, 2269, 2271, 2277, 2278, 2430, 2431, 2433, 2439 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`The numbers of the form 9x+1 occupy the same positions in S that 1 occupies in the infinite Fibonacci word (A003849).`
	REFERENCES	`Preprint available from Clark Kimberling`
	CROSSREFS	`Sequence in context: A092169 A093108 A077560 * A025616 A136852 A031115` `Adjacent sequences: A060137 A060138 A060139 * A060141 A060142 A060143`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu), Mar 05 2001`

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Last modified February 14 07:16 EST 2012. Contains 205589 sequences.