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 A066091 #14 Jun 16 2018 13:41:27 %S A066091 1,2,6,96,58752,331914018816,6472527787868799987640958976, %T A066091 13905078437588927055776809046479521344793888146925785597768443625472 %N A066091 a(n+2) = a(n+1)*a(n)*(a(n+1)+a(n)). %C A066091 The next term has 163 digits. - _Harvey P. Dale_, Dec 09 2017 %H A066091 Harry J. Smith, <a href="/A066091/b066091.txt">Table of n, a(n) for n = 0..10</a> %t A066091 nxt[{a_,b_}]:={b,a*b*(a+b)}; NestList[nxt,{1,2},10][[All,1]] (* _Harvey P. Dale_, Dec 09 2017 *) %o A066091 (PARI) { for (n=0, 10, if (n>1, a=a1*a2*(a1+a2); a2=a1; a1=a, if (n, a=a1=2, a=a2=1)); write("b066091.txt", n, " ", a) ) } \\ _Harry J. Smith_, Nov 12 2009 %K A066091 nonn %O A066091 0,2 %A A066091 _Benoit Cloitre_, Dec 30 2001