Category:Recurrence, linear, order 02, (2,-1)

These integer sequences can also be described as linear polynomials: ${\displaystyle (a_{1}-a_{0})x+a_{0}\,}$.

${\displaystyle a_{n}=\sum _{i=1}^{2}(-1)^{i+1}{\binom {2}{i}}a_{n-i}\,}$