id:A078574 - OEIS Search Results

Search: id:A078574

Displaying 1-1 of 1 results found.

page 1

Number of divisors of the average of n-th twin prime pair.

+0
2

3, 4, 6, 6, 8, 8, 12, 12, 8, 12, 8, 12, 18, 14, 12, 12, 20, 16, 8, 16, 12, 24, 20, 16, 12, 16, 24, 8, 8, 24, 20, 8, 18, 16, 18, 24, 16, 24, 12, 24, 24, 16, 12, 16, 16, 32, 24, 18, 16, 20, 16, 30, 12, 8, 16, 12, 30, 8, 24, 24, 16, 18, 8, 24, 28, 16, 24, 8, 30, 32, 36, 8, 24, 30, 8 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n)=A000005(A014574(n)).`
	EXAMPLE	`4-th twin prime pair = (A001359(4), A006512(4)) = (17,19), hence A014574(4) = 18 with divisors = {1,2,3,6,9,18} therefore a(4) = 6.`
	CROSSREFS	`Cf. A078570, A078571.` `Sequence in context: A077542 A023836 A064800 this_sequence A162625 A033095 A158907` `Adjacent sequences: A078571 A078572 A078573 this_sequence A078575 A078576 A078577`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 29 2002`

page 1

Search completed in 0.002 seconds

Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

AT&T Labs Research