OFFSET
1,2
LINKS
Qihao Ye, Table of n, a(n) for n = 1..714
FORMULA
Nonnegative integer points (p_1, p_2, ..., p_n) in polytope p_0=p_{n+1}=0, 2p_i -(p_{i+1}+p_{i-1}) <= 9, p_i >= 0, i=1, ..., n.
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved