id:A143073 - OEIS Search Results

Search: id:A143073

Displaying 1-1 of 1 results found.

page 1

Least number k such that the binary expansion of n*k has fewer ones than n, or 0 if no such k exists.

+0
3

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 5, 0, 0, 0, 0, 0, 27, 0, 0, 3, 3, 0, 41, 5, 3, 0, 5, 0, 0, 0, 0, 0, 0, 0, 7085, 27, 7, 0, 25, 0, 3, 3, 0, 3, 3, 0, 0, 41, 0, 5, 5, 3, 3, 0, 9, 5, 3, 0, 5, 0, 0, 0, 0, 0, 128207979, 0, 0, 0, 119, 0, 0, 7085, 0, 27, 5, 7, 7, 0, 1657009, 25, 395, 0, 0, 3, 3, 3, 0, 0 (list; graph; listen)

	OFFSET	`1,11`
	COMMENT	`a(n)=0 indicates that n is a sturdy number (A125121); that is, no multiple of n has fewer ones than the binary expansion of n. If a(n)>0, n is a flimsy number (A005360). Compare with A143069.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	CROSSREFS	`Sequence in context: A074171 A094665 A052439 this_sequence A154725 A010816 A133089` `Adjacent sequences: A143070 A143071 A143072 this_sequence A143074 A143075 A143076`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Jul 22 2008`

page 1

Search completed in 0.002 seconds

Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research