login
a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026568.
0

%I #8 Oct 26 2019 22:42:10

%S 7,44,273,1696,10573,66151,415277,2615004,16512355,104526093,

%T 663143211,4215574482,26846320149,171243444982,1093897673897,

%U 6997031842554,44809862773473,287283383574927,1843675415666053,11842954734864350,76138777668602115,489884818519692190

%N a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026568.

%K nonn

%O 2,1

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Oct 26 2019