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 A328922 #10 May 02 2021 18:33:03 %S A328922 0,0,0,4,4,1,128,120,36,4,6432,5952,1920,288,18,494592,458880,154560, %T A328922 26400,2400,96,55027200,51448320,17832960,3279360,352800,21600,600, %U A328922 8455495680,7975296000,2819013120,543110400,64350720,4798080,211680,4320,1729137070080,1644441845760,589071974400 %N A328922 Triangle T(n,k): vertex labeled disconnected Goldstone diagrams with n interactions and k external potentials. %H A328922 P. J. Rossky and M. Karplus, <a href="https://doi.org/10.1063/1.432387">The enumeration of Goldstone diagrams in many-body perturbation theory</a>, J. Chem. Phys. 64 (1976) 1569, D(n,k) %F A328922 T(n,k) + A328921(n,k) = A328826(n,k). %e A328922 0; %e A328922 0 0; %e A328922 4 4 1; %e A328922 128 120 36 4; %e A328922 6432 5952 1920 288 18; %e A328922 494592 458880 154560 26400 2400 96; %e A328922 55027200 51448320 17832960 3279360 352800 21600 600; %e A328922 8455495680 ... %Y A328922 Cf. A328826, A328921, A328923, A328924. %K A328922 nonn,tabl %O A328922 0,4 %A A328922 _R. J. Mathar_, Oct 31 2019