OFFSET
0,1
COMMENTS
The matrix solutions to G^2=G+1 are gI, g'I (where g is the golden number and g'=1-g) and the matrices 2G=[1+p q-B | q+B 1-p]. It is easy to see that B must be even.
FORMULA
a(n)=8*104767(n) if n != 1, a(1)=4.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Michele Dondi (blazar(AT)lcm.mi.infn.it), Mar 24 2005
STATUS
approved