id:A083891 - OEIS Search Results

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Number of divisors of n with largest digit = 4 (base 10).

+0
12

0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 2, 1, 2, 1, 2, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 2, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 1, 0, 1, 0, 2, 0 (list; graph; listen)

	OFFSET	`1,24`
	COMMENT	`a(n) = A000005(n) - A083888(n) - A083889(n) - A083890(n) - A083892(n) - A083893(n) - A083894(n) - A083895(n) - A083896(n) = A083899(n) - A083898(n).`
	EXAMPLE	`n=120, 3 of the 16 divisors of 120 have largest digit =4:` `{4,24,40}, therefore a(120)=3.`
	CROSSREFS	`Cf. A054055, A000005, A083899.` `Sequence in context: A070202 A130207 A083914 this_sequence A087623 A036274 A047753` `Adjacent sequences: A083888 A083889 A083890 this_sequence A083892 A083893 A083894`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 08 2003`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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