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 A089816 #8 Sep 08 2022 08:45:12
%S A089816 1,4,26,222,2451,33288,538084,10101010,216145205,5195862732,
%T A089816 138679078110,4070332170534,130325562613351,4521260802379792,
%U A089816 168962471790509960,6767528048726614650,289242639716420115369
%N A089816 a(n) = floor((n+3)^(n+2)/((n+3)^2-1)).
%H A089816 G. C. Greubel, <a href="/A089816/b089816.txt">Table of n, a(n) for n = 0..385</a>
%t A089816 Table[Floor[(n + 3)^(n + 2)/((n + 3)^2 - 1)], {n, 0, 50}] (* _G. C. Greubel_, Oct 11 2017 *)
%o A089816 (PARI) for(n=0, 25, print1(floor((n+3)^(n+2)/((n+3)^2-1)), ", ")) \\ _G. C. Greubel_, Oct 11 2017
%o A089816 (Magma) [Floor((n+3)^(n+2)/((n+3)^2-1)): n in [0..25]]; // _G. C. Greubel_, Oct 11 2017
%Y A089816 Cf. A000975, A033113-A033119, A059848, A062864, A056830.
%K A089816 nonn
%O A089816 0,2
%A A089816 _Paul Barry_, Nov 12 2003