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a(n) = Fibonacci(10^n).
7

%I #8 Jun 08 2018 21:34:55

%S 1,55,354224848179261915075

%N a(n) = Fibonacci(10^n).

%C The next term has 209 digits. - _Harvey P. Dale_, May 28 2018

%H Alois P. Heinz, <a href="/A250489/b250489.txt">Table of n, a(n) for n = 0..3</a>

%F a(n) = A000045(10^n).

%p a:= n-> (<<0|1>, <1|1>>^(10^n))[1, 2]:

%p seq(a(n), n=0..3);

%Y Row n=10 of A250486.

%Y Cf. A000045.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Nov 24 2014