A111432 - OEIS

%I #5 Aug 03 2017 17:48:03

%S 0,0,0,1,1,1,3,21,610,514229,225851433717,16641027750620563662096,

%T 13180872826374098837632191485015125807374171,

%U 284812298108489611757988937681460995615380088782304890986477195645969271404032323901

%N Fibonacci(tetranacci(n)).

%F a(n) = A000045(A000078(n)).

%e a(0) = Fibonacci(tetranacci(0)) = A000045(A000078(0)) = A000045(0) = 0.

%e a(1) = Fibonacci(tetranacci(1)) = A000045(A000078(1)) = A000045(0) = 0.

%e a(2) = Fibonacci(tetranacci(2)) = A000045(A000078(2)) = A000045(0) = 0.

%e a(3) = Fibonacci(tetranacci(3)) = A000045(A000078(3)) = A000045(1) = 1.

%e a(4) = Fibonacci(tetranacci(4)) = A000045(A000078(4)) = A000045(1) = 1.

%e a(5) = A000045(A000078(5)) = A000045(2) = 1.

%e a(6) = A000045(A000078(6)) = A000045(4) = 3.

%e a(7) = A000045(A000078(7)) = A000045(8) = 21.

%e a(8) = A000045(A000078(8)) = A000045(15) = 610.

%e a(9) = A000045(A000078(9)) = A000045(29) = 514229.

%e a(10) = A000045(A000078(10)) = A000045(56) = 225851433717.

%t Fibonacci[LinearRecurrence[{1,1,1,1},{0,0,0,1},14]] (* _Harvey P. Dale_, Aug 03 2017 *)

%Y Cf. A000045, A000078, A066178, A007570.

%K easy,nonn

%O 0,7

%A _Jonathan Vos Post_, Nov 13 2005