a(n) = 9*a(n-1) - 7*a(n-2), with a(0)=0, a(1)=1.
A190984
a(n) = 9*a(n-1) - 7*a(n-2), with a(0)=0, a(1)=1.
Terms
- a(0) =0a(1) =1a(2) =9a(3) =74a(4) =603a(5) =4909a(6) =39960a(7) =325277a(8) =2647773a(9) =21553018a(10) =175442751a(11) =1428113633a(12) =11624923440a(13) =94627515529a(14) =770273175681
External references
- oeis: A190984