OFFSET
1,1
EXAMPLE
a(7) = 11 as 8 < 7!, 8*9 < 7!, 8*9*10 < 7! but 8*9*10*11 = 7920 > 7! = 5040.
MATHEMATICA
Do[k = n + 1; s = k; While[s < n!, k++; s = s * k]; Print[k], {n, 1, 30}] (* Ryan Propper *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Mar 27 2004
EXTENSIONS
More terms from William Rex Marshall, Jun 22 2005
STATUS
approved