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a(n)=f(n,n) where f is given in A034261.
1

%I #7 Mar 30 2012 18:56:26

%S 0,1,7,39,196,930,4257,19019,83512,361998,1553630,6615686,27992472,

%T 117823940,493768485,2061580275,8580127920,35611376790,147447066690,

%U 609200868210,2512267906200,10342848445020,42516521451690,174535009040574

%N a(n)=f(n,n) where f is given in A034261.

%K nonn

%O 1,3

%A _Clark Kimberling_

%E Corrected and extended Apr 21 2000 - _N. J. A. Sloane_.