a(n) = 9*a(n-1) - 2*a(n-2), with a(0)=0, a(1)=1.
A190979
a(n) = 9*a(n-1) - 2*a(n-2), with a(0)=0, a(1)=1.
Terms
- a(0) =0a(1) =1a(2) =9a(3) =79a(4) =693a(5) =6079a(6) =53325a(7) =467767a(8) =4103253a(9) =35993743a(10) =315737181a(11) =2769647143a(12) =24295349925a(13) =213118855039
External references
- oeis: A190979