OFFSET
2,2
FORMULA
For n>1, a(n) = A078753(n!/2).
EXAMPLE
To factor 9!+1 = 362881 using Fermat's method takes 207 iterations to reach 269 * 1349 (see A078753).
CROSSREFS
KEYWORD
nonn
AUTHOR
Jason Earls, May 09 2004
EXTENSIONS
More terms from Sean A. Irvine, Apr 08 2010
Further terms from Max Alekseyev, May 03 2010
STATUS
approved