OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
EXAMPLE
30 is included because 30 = 3! + 4!.
MATHEMATICA
Union[Total/@Tuples[Range[10]!, 2]] (* Harvey P. Dale, May 04 2011 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Leroy Quet, Jan 20 2002
STATUS
approved