OFFSET
5,2
FORMULA
a(n) = sum(binomial(n-k, k), k=0..5), n >= 9. - Johannes W. Meijer, Aug 10 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, May 02 2000
EXTENSIONS
a(20) corrected by Johannes W. Meijer, Aug 11 2013
STATUS
approved