OFFSET
1,2
FORMULA
a(n+20)=a(n)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Dec 10 1999
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org), Feb 05 2001
STATUS
approved