OFFSET
2,1
COMMENTS
EXAMPLE
For n=3 a(3)=4 since equation x^2-3*floor(x/sqrt(3))^2=1 has the following solutions: x=1, 2, 7, 26, 97, ... for which x(i+2)=4x(i+1)-x(i).
CROSSREFS
KEYWORD
nonn
AUTHOR
Carmine Suriano, Sep 08 2010
STATUS
approved