OFFSET
0,4
LINKS
CROSSREFS
KEYWORD
nonn,hard,fini
AUTHOR
François Labelle, Jan 12 2004
EXTENSIONS
a(11) from François Labelle, Jul 25 2004, who thanks Joost de Heer for providing computer time.
a(12) from François Labelle, Mar 04 2012
a(13) from François Labelle, Aug 15 2017
STATUS
approved