%I

%S 1,12,83,630,3171,21672,97482,639180,2730615,17543196,72932904,

%T 463291920,1895949055,11961944400,48478715240,304543085040

%N a(n) = Sum{T(n,k)*T(n,k+3)}, 0<=k<=n-3, T given by A026374.

%K nonn

%O 3,2

%A _Clark Kimberling_