OFFSET
1,4
EXAMPLE
a(11) = 8 because 11!/8! = 9*10*11 = 990 has 24 divisors (and 24 is >= 11), but 11!/9! = 10*11 = 110 has 8 divisors (and 8 is < 11).
MAPLE
with(numtheory): a:=proc(n) local A, k: A:={}: for k from 1 to n do if tau(n!/k!)>=n then A:=A union {k} else A:=A fi od: A[nops(A)]; end: seq(a(n), n=1..90); # Emeric Deutsch, Mar 23 2007
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Mar 10 2007
EXTENSIONS
More terms from Emeric Deutsch, Mar 23 2007
STATUS
approved