A027226 - OEIS

%I #9 Oct 25 2019 04:58:24

%S 1,11,75,496,2523,14903,68478,389040,1705001,9552071,40792260,

%T 227758442,957346363,5353798598,22267534284,125033595506,516148089100,

%U 2913354375795,11958933491775,67884893610121,277431526202759,1583886793301326,6449958580342975,37029044240499120

%N a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026747.

%K nonn

%O 3,2

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Oct 24 2019