OFFSET
1,2
EXAMPLE
Quadronacci ratio is root 1.92756... (A086088) of polynomial x^4-x^3-x^2-x-1.
MATHEMATICA
With[{c=x/.FindRoot[x^4-x^3-x^2-x-1==0, {x, 1.9}, WorkingPrecision->100]}, Floor[c^Range[40]]] (* Harvey P. Dale, Mar 05 2012 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 13 2006
STATUS
approved