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A104588 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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