This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083903 Number of divisors of n with largest digit <= 8 (base 10). 4
 1, 2, 2, 3, 2, 4, 2, 4, 2, 4, 2, 6, 2, 4, 4, 5, 2, 5, 1, 6, 4, 4, 2, 8, 3, 4, 3, 6, 1, 8, 2, 6, 4, 4, 4, 8, 2, 3, 3, 8, 2, 8, 2, 6, 5, 4, 2, 10, 2, 6, 4, 6, 2, 7, 4, 8, 3, 3, 1, 12, 2, 4, 5, 7, 4, 8, 2, 6, 3, 8, 2, 11, 2, 4, 6, 5, 4, 7, 1, 10, 4, 4, 2, 12, 4, 4, 3, 8, 1, 10, 3, 5, 3, 3, 2, 11, 1, 4, 4, 9, 2, 8 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) = A083902(n) + A083895(n) = A000005(n) - A083896(n). LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Table[Length[DeleteCases[Divisors[n], _?(Max[IntegerDigits[#]]==9&)]], {n, 110}] (* Harvey P. Dale, Nov 21 2015 *) CROSSREFS Cf. A054055, A000005. Sequence in context: A025479 A093640 A320538 * A306509 A083867 A076888 Adjacent sequences:  A083900 A083901 A083902 * A083904 A083905 A083906 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, May 08 2003 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 19 08:44 EDT 2019. Contains 322241 sequences. (Running on oeis4.)