id:A086416 - OEIS Search Results

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Number of divisors of 3-smooth numbers.

+0
2

1, 2, 2, 3, 4, 4, 3, 6, 5, 6, 8, 4, 6, 9, 10, 8, 7, 12, 5, 12, 12, 8, 15, 10, 14, 16, 6, 9, 18, 15, 16, 20, 12, 10, 21, 20, 7, 18, 24, 18, 11, 24, 25, 14, 20, 28, 24, 12, 8, 27, 30, 21, 22, 32, 30, 13, 16, 30, 35, 28, 24, 9, 36, 36, 14, 24, 33, 40, 35, 26, 18, 40, 42, 15, 32 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000005(A003586(n));` `a(n) = if A086414(n)=A086415(n) then A086414(n)+1 else (A086414(n)+1)(A086415(n)+1);` `a(n) = (A022328(n)+1)(A022329(n)+1).`
	CROSSREFS	`Cf. A086417.` `Sequence in context: A078664 A069581 A085430 this_sequence A065167 A095395 A029134` `Adjacent sequences: A086413 A086414 A086415 this_sequence A086417 A086418 A086419`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jul 18 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research