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A339757
a(n) is the number of Zuckerman numbers k for which k/A007954(k) = n, where A007954(k) is the product of the decimal digits of k.
1
9, 1, 2, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 1, 0, 0, 1, 3, 2, 0, 1, 2, 3, 0, 0, 0, 1, 2, 2, 0
OFFSET
1,1
COMMENTS
The indices of 0's are A342593.
EXAMPLE
The integers k=1 to 9 are the Zuckerman numbers that satisfy k/A007954(k)=1, so a(1)=9.
CROSSREFS
Cf. A007954 (product of decimal digits), A007602 (Zuckerman numbers), A056770.
Cf. A288069 (Zuckerman quotients), A342593 (Zuckerman non-quotients).
Sequence in context: A068452 A021527 A257437 * A354347 A010166 A186116
KEYWORD
nonn,base,more
AUTHOR
Michel Marcus, Apr 04 2021
STATUS
approved