a(n) = 8*a(n-1) + 4*a(n-2), with a(0)=0, a(1)=1.
A190510
a(n) = 8*a(n-1) + 4*a(n-2), with a(0)=0, a(1)=1.
Terms
- a(0) =0a(1) =1a(2) =8a(3) =68a(4) =576a(5) =4880a(6) =41344a(7) =350272a(8) =2967552a(9) =25141504a(10) =213002240a(11) =1804583936a(12) =15288680448a(13) =129527779328
External references
- oeis: A190510