a(n) = 8*a(n-1) + a(n-2) for n>2, with a(0)=1, a(1)=7, a(2)=56.

A155197

a(n) = 8*a(n-1) + a(n-2) for n>2, with a(0)=1, a(1)=7, a(2)=56.

Terms

    a(0) =1a(1) =7a(2) =56a(3) =455a(4) =3696a(5) =30023a(6) =243880a(7) =1981063a(8) =16092384a(9) =130720135a(10) =1061853464a(11) =8625547847a(12) =70066236240a(13) =569155437767

External references