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A288738
Number of ways writing the n-th 7-smooth number as a product of decimal digits of some other number which has no digits equal to 1.
1
1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 3, 1, 1, 4, 3, 2, 1, 5, 1, 2, 2, 2, 5, 1, 6, 3, 2, 2, 7, 1, 1, 4, 3, 3, 2, 7, 1, 9, 1, 4, 3, 3, 3, 9, 1, 2, 1, 7, 4, 5, 1, 3, 8, 2, 2, 13, 1, 2, 5, 5, 5, 1, 6, 2, 12, 2, 3, 2, 12, 5, 2, 7, 3, 1, 1, 6, 10, 4, 3, 17, 2, 3, 2, 7, 10, 7
OFFSET
1,4
COMMENTS
This sequence is A067734 without the zeros.
LINKS
CROSSREFS
KEYWORD
nonn,base
AUTHOR
David A. Corneth, Jun 22 2017
STATUS
approved