Number of length n+2 0..4 arrays with no three consecutive terms having the sum of any two elements equal to twice the third.
A248457
Number of length n+2 0..4 arrays with no three consecutive terms having the sum of any two elements equal to twice the third.
Terms
- a(0) =96a(1) =380a(2) =1512a(3) =6040a(4) =24160a(5) =96736a(6) =387488a(7) =1552448a(8) =6220480a(9) =24926080a(10) =99883840a(11) =400260160a(12) =1603955712a(13) =6427525312a(14) =25757039296a(15) =103216337152a(16) =413619611968
External references
- oeis: A248457