A027323 - OEIS

%I #8 Oct 27 2019 19:56:35

%S 1,5,38,281,2116,16222,126244,994860,7923456,63679869,515810606,

%T 4206733157,34515110876,284699216035,2359535370142,19638957026491,

%U 164089666469232,1375812276097887,11572233529290882,97619679434165691,825688568949199356,7001040129052461912

%N a(n) = Sum_{k=0..m} T(n,k) * T(n,k+1), where m=0 for n=1; m=n for n >= 2; and T is given by A026120.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Oct 27 2019