Number of length-n 0..5 arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.
A268953
Number of length-n 0..5 arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =12a(4) =40a(5) =154a(6) =655a(7) =3045a(8) =15124a(9) =78930a(10) =426289a(11) =2355975a(12) =13216982a(13) =74856340a(14) =426491859a(15) =2438853865a(16) =13977348104a(17) =80210943670a(18) =460646222293
External references
- oeis: A268953