c1=a1+b1=1,b1=0所以a1=1
c2-c1=b2-b1+a2-a1=q-1+d=0
c3-c2=b3-b2+a3-a2=q*q-q+d=1
q=2
d=-1
an=2^(n-1)
bn=1-n
cn=2^(n-1)-n+1
Sn=2^n-1+n-n(n+1)/2=2^n+n(1-n)/2-1
s10=1024-45-1=978
c1=a1+b1=1,b1=0所以a1=1
c2-c1=b2-b1+a2-a1=q-1+d=0
c3-c2=b3-b2+a3-a2=q*q-q+d=1
q=2
d=-1
an=2^(n-1)
bn=1-n
cn=2^(n-1)-n+1
Sn=2^n-1+n-n(n+1)/2=2^n+n(1-n)/2-1
s10=1024-45-1=978