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 A320990 #4 Oct 25 2018 20:49:11 %S A320990 0,1,8,65,4168,2134081,69929570376,1173223506987487297, %T A320990 644986443956439734064225751112, %U A320990 5948949931338226254069168911286743617840154185793,30164759804754346385078845671118798583946045417223576862481934288047850387443784 %N A320990 Fibonacci rabbit sequence number n coded in base eight. %H A320990 Alois P. Heinz, <a href="/A320990/b320990.txt">Table of n, a(n) for n = 0..15</a> %p A320990 b:= proc(n) option remember; `if`(n<2, [n$2], [b(n-1)[1]* %p A320990 8^b(n-1)[2]+b(n-2)[1], b(n-1)[2]+b(n-2)[2]]) %p A320990 end: %p A320990 a:= n-> b(n)[1]: %p A320990 seq(a(n), n=0..11); %Y A320990 Column k=8 of A144287. %K A320990 nonn %O A320990 0,3 %A A320990 _Alois P. Heinz_, Oct 25 2018