OFFSET
1,2
EXAMPLE
a(10) = 216 as A342950(10) = 12 and 216 is the least number in A007602 that has product of digits 12.
a(17) = 0 as A342950(17) = 25 and the only way the product of digits of a number can be 25 is if the number has two 5's and other digits, if any, are 1. Such a number must end in 5. The tens digit can only be 1 or 5, but no possibility gives a multiple of 25.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
David A. Corneth, Mar 30 2021
STATUS
approved