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s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = (F(2), F(3), F(4), ...).
0

%I #3 Mar 30 2012 18:56:00

%S 0,0,3,5,8,13,21,34,68,110,178,288,466,754,1220,1974,3283,5312,8595,

%T 13907,22502,36409,58911,95320,154231,249551,404769,654930,1059699,

%U 1714629,2774328,4488957,7263285

%N s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = (F(2), F(3), F(4), ...).

%K nonn

%O 2,3

%A _Clark Kimberling_