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 A295470 #5 Nov 28 2017 14:09:35 %S A295470 1,83980,29966636700,12398706131799988,5447952226877283703580, %T A295470 2473617870747229982625186480,1146602219745194113307246953503300, %U A295470 539110100779634346434520330628287843000,256130864665265316470308479790547084791062300,122657586881362583078239819278500645564891283341200 %N A295470 a(n) = (20*n)!*(6*n)!*n!/((12*n)!*(10*n)!*(3*n)!*(2*n)!). %F A295470 G.f.: hypergeom([1/20, 3/20, 7/20, 9/20, 11/20, 13/20, 17/20, 19/20], [1/12, 1/3, 5/12, 1/2, 7/12, 2/3, 11/12], 10000000000/19683*x). %Y A295470 Cf. A295431. %K A295470 nonn %O A295470 0,2 %A A295470 _Gheorghe Coserea_, Nov 28 2017