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%I #5 Oct 25 2018 20:35:52
%S 0,1,4,17,276,17681,18105620,1186569930001,79629360058944734484,
%T 350213629188686097286494407640337,
%U 103364819020299355365011185381334444307580296786887956
%N Fibonacci rabbit sequence number n coded in base four.
%H Alois P. Heinz, <a href="/A320986/b320986.txt">Table of n, a(n) for n = 0..16</a>
%p b:= proc(n) option remember; `if`(n<2, [n$2], [b(n-1)[1]*
%p 4^b(n-1)[2]+b(n-2)[1], b(n-1)[2]+b(n-2)[2]])
%p end:
%p a:= n-> b(n)[1]:
%p seq(a(n), n=0..11);
%Y Column k=4 of A144287.
%K nonn
%O 0,3
%A _Alois P. Heinz_, Oct 25 2018
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