id:A160813 - OEIS Search Results

Search: id:A160813

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a(n) = A160812(n)/2.

+0
13

0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 2, 0, 2, 1, 1, 1, 3, 1, 3, 1, 2, 2, 3, 0, 3, 3, 3, 2, 4, 1, 4, 2, 3, 3, 3, 1, 5, 4, 4, 2, 5, 2, 5, 3, 3, 4, 5, 1, 5, 4, 5, 4, 6, 3, 5, 3, 5, 5, 6, 1, 6, 5, 4, 4, 6, 4, 7, 5, 6, 4, 7, 2, 7, 6, 5, 5, 6, 4, 7, 3, 6, 7, 8, 3, 7, 7, 7, 5, 8, 3 (list; graph; listen)

	OFFSET	`1,11`
	LINKS	`O. E. Pol, Determinacion geometrica de los numeros primos y perfectos` `O. E. Pol, Illustration: Divisors and pi(x)`
	FORMULA	`a(n) = (A161205(n)-A000005(n))/2. [From Omar E. Pol (info(AT)polprimos.com), Aug 02 2009]`
	CROSSREFS	`Cf. A000005, A000720, A018253, A160811, A160812, A161203, A161204.` `Cf. A161205. [From Omar E. Pol (info(AT)polprimos.com), Aug 02 2009]` `Sequence in context: A111330 A117447 A053250 this_sequence A116664 A024161 A035156` `Adjacent sequences: A160810 A160811 A160812 this_sequence A160814 A160815 A160816`
	KEYWORD	`easy,more,nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Jun 19 2009, Jun 28 2009`
	EXTENSIONS	`More terms from Omar E. Pol (info(AT)polprimos.com), Aug 02 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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