Number of length-n 0..4 arrays with no following elements greater than or equal to the first repeated value.
A267228
Number of length-n 0..4 arrays with no following elements greater than or equal to the first repeated value.
Terms
- a(0) =5a(1) =25a(2) =110a(3) =470a(4) =1980a(5) =8274a(6) =34396a(7) =142474a(8) =588596a(9) =2426738a(10) =9989292a(11) =41065818a(12) =168636772a(13) =691859842a(14) =2836150748a(15) =11617837802a(16) =47559474708a(17) =194575978386a(18) =795613053964
External references
- oeis: A267228