A083910 - OEIS

This site is supported by donations to The OEIS Foundation.

A083910

Number of divisors of n that are congruent to 0 modulo 10.

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,20`
	COMMENTS	`a(n) = A000005(n) - A083911(n) - A083912(n) - A083913(n) - A083914(n) - A083915(n) - A083916(n) - A083917(n) - A083918(n) - A083919(n).`
	FORMULA	`a(10k) = tau(k) = A000005(k); a(n) = 0 if 10 does not divide n. - Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Apr 15 2007`
	CROSSREFS	`Cf. A010879, A000005, A001227.` `Sequence in context: A024155 A173667 A086008 * A069843 A069849 A138045` `Adjacent sequences: A083907 A083908 A083909 * A083911 A083912 A083913`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003`

Content is available under The OEIS End-User License Agreement .

Last modified February 13 11:07 EST 2012. Contains 205459 sequences.