a(n) = 9*a(n - 1) - a(n - 2) for n>1, a(0)=0, a(1)=1.

A018913

a(n) = 9*a(n - 1) - a(n - 2) for n>1, a(0)=0, a(1)=1.

Terms

    a(0) =0a(1) =1a(2) =9a(3) =80a(4) =711a(5) =6319a(6) =56160a(7) =499121a(8) =4435929a(9) =39424240a(10) =350382231a(11) =3114015839a(12) =27675760320a(13) =245967827041

External references