A026982 - OEIS

%I #8 Oct 20 2019 22:03:03

%S 1,6,24,120,460,2214,8475,40164,154235,724742,2792579,13050280,

%T 50432693,234766510,909442512,4221139640,16384219216,75873259406,

%U 294977735364,1363503281324,5308113306398,24499364386598,95483014454706,440147035814920,1717035728143720,7906666535747934

%N a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026670.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Oct 20 2019