OFFSET
1,3
COMMENTS
The first three zeros occur at terms 7, 21 and 181440.
LINKS
T. D. Noe, Table of n, a(n) for n = 1..10000
MATHEMATICA
Table[n - Times @@ IntegerDigits[Prime[n]], {n, 100}] (* T. D. Noe, Jun 28 2012 *)
CROSSREFS
KEYWORD
base,easy,sign
AUTHOR
Michael Turniansky, Jun 28 2012
STATUS
approved