OFFSET
1,3
COMMENTS
Also a(n) is a largest m such that m! <= sqrt(n!). - Zak Seidov, Jul 07 2009
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
EXAMPLE
n = 12: 5040 = 1*2*3*4*5*6*7 <= 8*9*10*11*12 = 95040 and as 40320 = 1*2*3*4*5*6*7*8 > 9*10*11*12 = 11880 we have a(12) = 7.
PROG
(PARI) { m=2; for (n=1, 1000, s=sqrt(n!); while (m! <= s, m++); write("b064542.txt", n, " ", m - 1) ) } \\ Harry J. Smith, Sep 18 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 08 2001
STATUS
approved