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A083918 Number of divisors of n that are congruent to 8 modulo 10. 11
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,48

COMMENTS

a(n) = A000005(n) - A083910(n) - A083911(n) - A083912(n) - A083913(n) - A083914(n) - A083915(n) - A083916(n) - A083917(n) - A083919(n).

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

Table[Count[Divisors[n], _?(Mod[#, 10]==8&)], {n, 110}] (* Harvey P. Dale, Sep 28 2016 *)

CROSSREFS

Cf. A010879, A000005, A001227.

Sequence in context: A248394 A127268 A252459 * A083895 A093488 A085858

Adjacent sequences:  A083915 A083916 A083917 * A083919 A083920 A083921

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, May 08 2003

STATUS

approved

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Last modified February 20 04:57 EST 2018. Contains 299358 sequences. (Running on oeis4.)