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 A320987 #4 Oct 25 2018 20:39:30 %S A320987 0,1,5,26,655,81901,255941280,99977062581901,122042312722047375081905, %T A320987 58194309578918159047081570466564535026, %U A320987 33873546390630164560327289199086683235486077084641297863363155 %N A320987 Fibonacci rabbit sequence number n coded in base five. %H A320987 Alois P. Heinz, <a href="/A320987/b320987.txt">Table of n, a(n) for n = 0..15</a> %p A320987 b:= proc(n) option remember; `if`(n<2, [n$2], [b(n-1)[1]* %p A320987 5^b(n-1)[2]+b(n-2)[1], b(n-1)[2]+b(n-2)[2]]) %p A320987 end: %p A320987 a:= n-> b(n)[1]: %p A320987 seq(a(n), n=0..11); %Y A320987 Column k=5 of A144287. %K A320987 nonn %O A320987 0,3 %A A320987 _Alois P. Heinz_, Oct 25 2018