id:A104588 - OEIS Search Results

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Product of primes less than or equal to sqrt(n).

+0
2

1, 1, 1, 2, 2, 2, 2, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`For n>0, #p(n) appears {(p(n+1))^2 - (p(n))^2} times [from n=(p(n))^2 to n=(p(n+1))^2 - 1, inclusive], i.e. A002110(n) appears A069482(n) times [from n=A001248(n) to n=A001248(n+1)-1, inclusive]`
	CROSSREFS	`Sequence in context: A139516 A160762 A112968 this_sequence A157279 A010671 A088050` `Adjacent sequences: A104585 A104586 A104587 this_sequence A104589 A104590 A104591`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Mar 17 2005`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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