A072437 - OEIS

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A072437

Numbers with no prime factors of form 4*k+3.

1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 29, 32, 34, 37, 40, 41, 50, 52, 53, 58, 61, 64, 65, 68, 73, 74, 80, 82, 85, 89, 97, 100, 101, 104, 106, 109, 113, 116, 122, 125, 128, 130, 136, 137, 145, 146, 148, 149, 157, 160, 164, 169, 170, 173, 178, 181, 185, 193, 194 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`m is a term iff A072436(m) = m.` `These numbers have density zero (Pollack).`
	LINKS	`P. Pollack, Analytic and Combinatorial Number Theory Course Notes, p. 119. [?Broken link]` `P. Pollack, Analytic and Combinatorial Number Theory Course Notes, p. 119.`
	FORMULA	`n>0 such that A001842(n)=0. - Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 24 2003`
	CROSSREFS	`Cf. A004144, A002144, A002145.` `A097706(a(n)) = 1.` `Sequence in context: A174868 A186349 A144876 * A115793 A076614 A000549` `Adjacent sequences: A072434 A072435 A072436 * A072438 A072439 A072440`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 17 2002`

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Last modified February 15 18:11 EST 2012. Contains 205835 sequences.