login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Fibonacci(heptanacci(n)), restricted to nonzero heptanacci numbers.
0

%I #5 Mar 30 2012 18:40:29

%S 1,1,1,3,21,987,2178309,10610209857723,155576970220531065681649693,

%T 33449372971981195681356806732944396691005381570580873

%N Fibonacci(heptanacci(n)), restricted to nonzero heptanacci numbers.

%F a(n) = A000045(A066178(n)).

%e a(0) = Fibonacci(heptanacci(0)) = A000045(A066178(0)) = A000045(1) = 1.

%e a(1) = Fibonacci(heptanacci(1)) = A000045(A066178(1)) = A000045(1) = 1.

%e a(2) = Fibonacci(heptanacci(2)) = A000045(A066178(2)) = A000045(2) = 1.

%e a(3) = Fibonacci(heptanacci(3)) = A000045(A066178(3)) = A000045(4) = 3.

%e a(4) = Fibonacci(heptanacci(4)) = A000045(A066178(4)) = A000045(8) = 21.

%e a(5) = Fibonacci(heptanacci(5)) = A000045(A066178(5)) = A000045(16) = 987.

%e a(6) = A000045(A066178(6)) = A000045(32) = 2178309.

%e a(7) = A000045(A066178(7)) = A000045(64) = 10610209857723.

%e a(8) = A000045(A066178(8)) = A000045(127) = 155576970220531065681649693.

%Y Cf. A000045, A001592, A066178, A007570.

%K easy,nonn

%O 0,4

%A _Jonathan Vos Post_, Nov 14 2005

%E Corrected by _T. D. Noe_, Nov 16 2006