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A084904 Number of places to insert a division operator in the decimal string of n such that an integer results. 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,102

COMMENTS

a(A084906(n))>0; record values: a(A000533(n))=n; a(n) < A055642(n).

LINKS

Table of n, a(n) for n=0..101.

FORMULA

a(n) = #{k: (n mod 10^k)>0 and ((n/10^k) mod (n mod 10^k))=0}.

EXAMPLE

a(42)=1, as 4/2=2; a(43)=0, as 4/3 is not an integer.

CROSSREFS

Cf. A084905.

Sequence in context: A229878 A235145 A266342 A285936 A037281 A143241 A258825

Adjacent sequences:  A084901 A084902 A084903 * A084905 A084906 A084907

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Jun 10 2003

STATUS

approved

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Last modified September 22 09:19 EDT 2017. Contains 292336 sequences.