a(n) = 8*a(n-1) - 16*a(n-2) + 12*a(n-4) with a(0)=0, a(1)=1, a(2)=4, a(3)=22.
A084157
a(n) = 8*a(n-1) - 16*a(n-2) + 12*a(n-4) with a(0)=0, a(1)=1, a(2)=4, a(3)=22.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =22a(4) =112a(5) =556a(6) =2704a(7) =13000a(8) =62080a(9) =295312a(10) =1401664a(11) =6644320a(12) =31472896a(13) =149017792a(14) =705395968a(15) =3338614912a(16) =15800258560a(17) =74772443392a(18) =353840161792
External references
- oeis: A084157