id:A132138 - OEIS Search Results

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Characteristic function of the set of numbers defined in A002977.

+0
4

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

	OFFSET	`1,1`
	COMMENT	`a(A002977(n)) = 1 and a(A132142(n)) = 0.`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 1..10000` `Index entries for characteristic functions`
	FORMULA	`a(n) = if chi(n) then 1 else 0, where chi(n) = if n<3 then (n=1) else ((n mod 2 = 1) AND chi((n-1)/2)) OR ((n mod 3 = 1) AND chi((n-1)/3)).`
	CROSSREFS	`Sequence in context: A082960 A075438 A118174 this_sequence A141212 A137893 A108882` `Adjacent sequences: A132135 A132136 A132137 this_sequence A132139 A132140 A132141`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 20 2007`

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.

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