id:A043545 - OEIS Search Results

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(Maximal base 2 digit of n)-(minimal base 2 digit of n).

+0
4

0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`0 followed by a string of 2^k - 1 1's. Also a(n)=0 iff n = 2^m - 1.` `G.f.: 1/(1-x) - Sum_{k>=0} x^(2^k-1). - Michael Somos, Aug 25 2003` `a(n)=(1+(-1)^C(n,floor(n/2)))/2; - Paul Barry (pbarry(AT)wit.ie), Jun 07 2006` `Ignoring first zero and beginning instead with offset 2, a(n) = A006530(n) mod 2. - Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jun 09 2008`
	PROGRAM	`(PARI) a(n)=if(n<0, 0, n++; n!=2^valuation(n, 2))`
	CROSSREFS	`Ones-complement of Fredholm-Rueppel sequence A036987.` `Sequence in context: A163539 A143538 A011656 this_sequence A094754 A074290 A091225` `Adjacent sequences: A043542 A043543 A043544 this_sequence A043546 A043547 A043548`
	KEYWORD	`nonn,base`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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