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A320986 Fibonacci rabbit sequence number n coded in base four. 2


%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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Last modified August 11 12:12 EDT 2022. Contains 356065 sequences. (Running on oeis4.)