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 A050510 #10 Apr 23 2021 12:05:58
%S A050510 0,6,30,120,240,520,960,1386,2184,3240,4160,5742,7068,9282,11914,
%T A050510 14040,17472,21420,24534,29450,33280,39270,45936,51060,58968,65000,
%U A050510 74256,84348,91980,103588,116130,125550,139776,150414,166430,183540,196272
%N A050510 Golden rectangular box numbers: a(n) = n*A007067(n)*A007067(A007067(n)).
%F A050510 a(n) = n*round(n*(1+sqrt(5))/2)*round(round(n*(1+sqrt(5))/2)*(1+sqrt(5))/2). - _Wesley Ivan Hurt_, Apr 23 2021
%t A050510 b[n_] := Round[n*GoldenRatio];
%t A050510 a[n_] := n*b[n]*b[b[n]];
%t A050510 Table[a[n], {n, 0, 36}] (* _Jean-François Alcover_, Dec 15 2017 *)
%o A050510 (PARI) b(n) = round(n*(1+sqrt(5))/2);
%o A050510 a(n) = n*b(n)*b(b(n)); \\ _Michel Marcus_, Dec 15 2017
%Y A050510 Cf. A007067, A050508.
%K A050510 easy,nice,nonn
%O A050510 0,2
%A A050510 Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Dec 28 1999