OFFSET
1,1
EXAMPLE
a(2) = (3+7)/2 = 5, a(4)= (3+7+5+13)/4 =7.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Dec 29 2003
EXTENSIONS
Corrected and extended by Ray Chandler, Dec 31 2003
STATUS
approved