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%I #8 Oct 23 2019 22:08:25
%S 3,23,165,1218,9247,71688,564759,4506005,36324407,295341956,
%T 2418783687,19932773439,165151576215,1374850036253,11493442158373,
%U 96443092570534,811995039077311,6857352935798972,58071096513853991,493014496906492215,4195315394988567303
%N a(n) = Sum_{k=0..2n-1} T(n,k) * T(n,k+1), with T given by A027113.
%K nonn
%O 1,1
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 23 2019
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