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A083896 Number of divisors of n with largest digit = 9 (base 10). 10
0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 2, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,90

COMMENTS

a(n) = A000005(n) - A083888(n) - A083889(n) - A083890(n) - A083891(n) - A083892(n) - A083893(n) - A083894(n) - A083895(n) = A000005(n) - A083903(n).

LINKS

Table of n, a(n) for n=1..105.

EXAMPLE

n=117, 2 of the 6 divisors of 117 have largest digit =9: {9,39},

therefore a(117)=2.

MATHEMATICA

Table[Count[Divisors[n], _?(Max[IntegerDigits[#]]==9&)], {n, 110}] (* Harvey P. Dale, Mar 15 2018 *)

CROSSREFS

Cf. A054055, A000005.

Sequence in context: A286361 A097295 A220572 * A084115 A284154 A080028

Adjacent sequences:  A083893 A083894 A083895 * A083897 A083898 A083899

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, May 08 2003

STATUS

approved

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Last modified May 25 06:40 EDT 2018. Contains 304542 sequences. (Running on oeis4.)