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%I #8 Oct 27 2019 19:58:53
%S 1,3,13,48,165,556,1836,5984,19302,61764,196361,620968,1955037,
%T 6132060,19171447,59770440,185888523,576870516,1786768047,5524718520,
%U 17056080375,52582317228,161900130438,497909056776,1529644586184,4694679875924,14395585776111
%N a(n) = Sum_{k=0..m} (k+1) * A026120(n, k), where m=0 for n=0,1; m=n for n >= 2.
%K nonn
%O 0,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 27 2019