id:A112753 - OEIS Search Results

Search: id:A112753

Displaying 1-1 of 1 results found.

page 1

Number of distinct prime factors of n-th number of the form 3^i*5^j.

+0
4

0, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`a(n) = A001221(A003593(n)) = 2 - 0^A022336(n) + 0^A022337(n);` `a(n) <= 2.`
	CROSSREFS	`Cf. A112754, A112758, A086412.` `Sequence in context: A088978 A160245 A154351 this_sequence A023589 A134034 A157415` `Adjacent sequences: A112750 A112751 A112752 this_sequence A112754 A112755 A112756`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 18 2005`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research