A024589 - OEIS

A024589

s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers), t = (F(2), F(3), ...).

%I #3 Mar 30 2012 18:55:58

%S 4,8,24,38,86,140,271,438,789,1277,2222,3595,6111,9888,16509,26712,

%T 44101,71357,117060,189407,309347,500534,814774,1318332,2141400,

%U 3464858,5620898,9094804

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

%K nonn

%O 1,1

%A _Clark Kimberling_