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%I #17 Oct 25 2019 16:51:53
%S 1,4,19,72,338,1289,6027,23117,107746,415058,1929383,7456777,34584731,
%T 134005510,620344059,2408498148,11131638368,43289074671,199800878749,
%U 778025282080,3586777011141,13982303458588,64394916131100,251261623174835,1156165698462868,4514741175877259
%N a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026725.
%p A027208 := proc(n)
%p add( A026725(n,k)*A026725(n,k+1),k=0..n-1) ;
%p end proc: # _R. J. Mathar_, Oct 21 2019
%K nonn
%O 1,2
%A _Clark Kimberling_
%E Name corrected by _R. J. Mathar_, Oct 21 2019
%E More terms from _Sean A. Irvine_, Oct 24 2019
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