Benford's law suggests that this sequence will contain about (log 3 - log 2)/log 10 =~ 18% of factorials. [From Charles R Greathouse IV, Nov 13 2010]
Table of n, a(n) for n=1..7.
Sequence in context: A100815 A159932 A100010 * A065665 A161575 A036502
Adjacent sequences: A045507 A045508 A045509 * A045511 A045512 A045513