This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A127086 #8 Jan 30 2020 22:03:02
%S A127086 1,4,26,192,1551,13416,122770,1180496,11883079,124992672,1372811900,
%T A127086 15741602608,188470662702,2356327731016,30760057620142,
%U A127086 419124712458444,5956905826561685,88230307480324360,1360309585677285312
%N A127086 Column 3 of triangle A127082.
%C A127086 Convolution 4th power of A127089.
%H A127086 G. C. Greubel, <a href="/A127086/b127086.txt">Table of n, a(n) for n = 3..80</a>
%t A127086 T[n_, k_]:= T[n, k]= If[k==n, 1, Coefficient[(1 + x*Sum[x^(r-k)*Sum[T[r, c], {c,k,r}], {r,k,n-1}] + x^(n+1))^(k+1), x, n-k]]; Table[T[n, 3], {n,3,25}] (* _G. C. Greubel_, Jan 30 2020 *)
%Y A127086 Cf. A127082.
%Y A127086 Columns of A127082: A127083, A127084, A127085.
%Y A127086 Cf. A127087, A127088, A127089, A127090, A127091.
%K A127086 nonn
%O A127086 3,2
%A A127086 _Paul D. Hanna_, Jan 04 2007