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T(n,n-2), array T as in A047140.
1

%I #4 Mar 30 2012 18:56:53

%S 1,4,13,42,148,540,1945,6994,25784,96564,361560,1353608,5113044,

%T 19462184,74227737,283335006,1085696746,4176869836,16100775648,

%U 62132631186,240258482330,931152718588,3614359486290,14044139747816

%N T(n,n-2), array T as in A047140.

%K nonn

%O 2,2

%A _Clark Kimberling_