A083894 - OEIS

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A083894

Number of divisors of n with largest digit = 7 (base 10).

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

	OFFSET	`1,70`
	COMMENTS	`a(n) = A000005(n) - A083888(n) - A083889(n) - A083890(n) - A083891(n) - A083892(n) - A083893(n) - A083895(n) - A083896(n) = A083902(n) - A083901(n).`
	EXAMPLE	`n=119, 2 of the 4 divisors of 119 have largest digit =7: {7,17}, therefore a(119)=2.`
	CROSSREFS	`Cf. A054055, A000005, A083902.` `Sequence in context: A170981 A161096 A165983 * A128257 A198254 A106035` `Adjacent sequences: A083891 A083892 A083893 * A083895 A083896 A083897`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003`

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Last modified February 13 20:11 EST 2012. Contains 205553 sequences.