a(n) = 6*a(n-1) - a(n-2) for n > 2; a(1) = 25, a(2) = 137.
A156158
a(n) = 6*a(n-1) - a(n-2) for n > 2; a(1) = 25, a(2) = 137.
Terms
- a(0) =25a(1) =137a(2) =797a(3) =4645a(4) =27073a(5) =157793a(6) =919685a(7) =5360317a(8) =31242217a(9) =182092985a(10) =1061315693a(11) =6185801173a(12) =36053491345a(13) =210135146897
External references
- oeis: A156158