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s(n+3)/2, where s is A024735.
0

%I #3 Mar 30 2012 18:55:59

%S 1,2,4,9,20,44,97,230,540,1257,2920,7128,17225,41276,98848,244857,

%T 602368,1472564,3594009,9001188,22402820,55447385,137104808,345794100,

%U 868000657,2169191678,5413976096,13735048385,34694002916,87290093640,219428919825

%N s(n+3)/2, where s is A024735.

%K nonn

%O 1,2

%A _Clark Kimberling_