OFFSET
1,2
COMMENTS
a(9) > 10^11. - Donovan Johnson, Jun 23 2011
a(10) > 2.75*10^14. - Giovanni Resta, Jun 04 2013
CROSSREFS
KEYWORD
nonn,base,hard,more
AUTHOR
Jason Earls, May 09 2002
EXTENSIONS
a(5)-a(7) from Donovan Johnson, Jul 29 2009
a(8) from Donovan Johnson, Jun 23 2011
a(9) from Giovanni Resta, Jun 04 2013
STATUS
approved