a(n) = 10*a(n-1)-19*a(n-2) for n > 1; a(0) = 1, a(1) = 9.
A164551
a(n) = 10*a(n-1)-19*a(n-2) for n > 1; a(0) = 1, a(1) = 9.
Terms
- a(0) =1a(1) =9a(2) =71a(3) =539a(4) =4041a(5) =30169a(6) =224911a(7) =1675899a(8) =12485681a(9) =93014729a(10) =692919351a(11) =5161913659a(12) =38453668921a(13) =286460329689
External references
- oeis: A164551