a(n) = -3*a(n-1) + 9*a(n-2) + 3*a(n-3), with a(0)=3, a(1)=-3, a(2)=27.
A215829
a(n) = -3*a(n-1) + 9*a(n-2) + 3*a(n-3), with a(0)=3, a(1)=-3, a(2)=27.
Terms
- a(0) =3a(1) =-3a(2) =27a(3) =-99a(4) =531a(5) =-2403a(6) =11691a(7) =-55107a(8) =263331a(9) =-1250883a(10) =5957307a(11) =-28339875a(12) =134882739a(13) =-641835171a(14) =3054430539a(15) =-14535159939a(16) =69169849155a(17) =-329162695299
External references
- oeis: A215829