Number of length-n 0..4 arrays with no repeated value unequal to the previous repeated value plus one mod 4+1.
A268940
Number of length-n 0..4 arrays with no repeated value unequal to the previous repeated value plus one mod 4+1.
Terms
- a(0) =5a(1) =25a(2) =120a(3) =565a(4) =2615a(5) =11950a(6) =54045a(7) =242365a(8) =1079240a(9) =4777225a(10) =21038595a(11) =92244790a(12) =402898865a(13) =1753806625a(14) =7611458520a(15) =32945585965a(16) =142262759615a(17) =612991045150
External references
- oeis: A268940