id:A083888 - OEIS Search Results

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Number of divisors of n with largest digit = 1 (base 10).

+0
11

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

	OFFSET	`1,10`
	COMMENT	`a(n) = A000005(n) - A083889(n) - A083890(n) - A083891(n) - A083892(n) - A083893(n) - A083894(n) - A083895(n) - A083896(n).`
	EXAMPLE	`n=110, 4 of the divisors of 110 {1,2,5,10,11,22,55,110} have` `largest digit =1: {1,10,11,110}, therefore a(110)=4.`
	CROSSREFS	`Cf. A054055, A000005.` `Sequence in context: A064284 A030409 A030407 this_sequence A102681 A025453 A094215` `Adjacent sequences: A083885 A083886 A083887 this_sequence A083889 A083890 A083891`
	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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