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 A144748 #13 Mar 14 2016 19:09:52
%S A144748 8,55,2969,8811991,77651176572089,6029705223029665929437251831,
%T A144748 36357345076631233348346773693633697407708655232275600729,
%U A144748 1321856541021241383115043586121503961331042183698683965174269952435581223368633124721267107619465028785549730711
%N A144748 Recurrence sequence a(n)=a(n-1)^2-a(n-1)-1, a(0)=8.
%C A144748 a(0)=3 is the smallest integer generating an increasing sequence of the form a(n)=a(n-1)^2-a(n-1)-1, cf. A144743.
%F A144748 a(n)=a(n-1)^2-a(n-1)-1 and a(0)=8.
%F A144748 a(n) ~ c^(2^n), where c = 7.3813237216360344087566795911708086794628396333350474334044779783264... . - _Vaclav Kotesovec_, May 06 2015
%t A144748 a = {}; k = 8; Do[k = k^2 - k - 1; AppendTo[a, k], {n, 1, 10}]; a
%t A144748 NestList[#^2-#-1&,8,10] (* _Harvey P. Dale_, Mar 14 2016 *)
%o A144748 (PARI) a(n, s=8)={for(i=1, n, s=s^2-s-1); s} \\ _M. F. Hasler_, Oct 06 2014
%Y A144748 Cf. A000058, A082732, A144743, A144744, A144745, A144746, A144747.
%K A144748 nonn
%O A144748 0,1
%A A144748 _Artur Jasinski_, Sep 20 2008
%E A144748 Edited by _M. F. Hasler_, Oct 06 2014