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Self-convolution of array T given by A026009.
1

%I #5 Mar 30 2012 18:56:15

%S 1,2,6,15,54,118,471,973,4128,8262,36481,71534,324876,627926,2911923,

%T 5568348,26241376,49767432,237550401,447567059,2158650078,4045351674,

%U 19679880649,36716551814,179920446576,334415846660

%N Self-convolution of array T given by A026009.

%K nonn

%O 0,2

%A _Clark Kimberling_